Add .delegate() and .undelegate(). An alternative to using .live() which goes from a single root and filters by the specified selectors. Should be used like do: .delegate(td, hover, someFn);. Fixes #6005.
This commit is contained in:
jeresig
parent
cb65daa399
commit
31432e048f
28
src/event.js
28
src/event.js
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@ -866,6 +866,20 @@ jQuery.fn.extend({
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return this;
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return this;
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},
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},
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delegate: function( selector, types, data, fn ) {
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return this.live( types, data, fn, selector );
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},
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undelegate: function( selector, types, fn ) {
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if ( arguments.length === 0 ) {
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return this.unbind( "live" );
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} else {
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return this.die( types, null, fn, selector );
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}
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},
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trigger: function( type, data ) {
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trigger: function( type, data ) {
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return this.each(function() {
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return this.each(function() {
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jQuery.event.trigger( type, data, this );
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jQuery.event.trigger( type, data, this );
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@ -910,8 +924,10 @@ jQuery.fn.extend({
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});
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});
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jQuery.each(["live", "die"], function( i, name ) {
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jQuery.each(["live", "die"], function( i, name ) {
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jQuery.fn[ name ] = function( types, data, fn ) {
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jQuery.fn[ name ] = function( types, data, fn, origSelector /* Internal Use Only */ ) {
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var type, i = 0;
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var type, i = 0,
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selector = origSelector || this.selector,
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context = origSelector ? this : jQuery( this.context );
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if ( jQuery.isFunction( data ) ) {
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if ( jQuery.isFunction( data ) ) {
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fn = data;
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fn = data;
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@ -928,13 +944,13 @@ jQuery.each(["live", "die"], function( i, name ) {
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if ( name === "live" ) {
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if ( name === "live" ) {
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// bind live handler
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// bind live handler
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jQuery( this.context ).bind( liveConvert( type, this.selector ), {
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context.bind( liveConvert( type, selector ), {
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data: data, selector: this.selector, live: type
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data: data, selector: selector, live: type
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}, fn );
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}, fn );
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} else {
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} else {
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// unbind live handler
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// unbind live handler
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jQuery( this.context ).unbind( liveConvert( type, this.selector ), fn ? { guid: fn.guid + this.selector + type } : null );
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context.unbind( liveConvert( type, selector ), fn ? { guid: fn.guid + selector + type } : null );
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}
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}
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}
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}
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@ -1002,7 +1018,7 @@ function liveHandler( event ) {
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}
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}
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function liveConvert( type, selector ) {
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function liveConvert( type, selector ) {
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return "live." + (type ? type + "." : "") + selector.replace(/\./g, "`").replace(/ /g, "&");
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return "live." + (type && type !== "*" ? type + "." : "") + selector.replace(/\./g, "`").replace(/ /g, "&");
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}
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}
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jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
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jQuery.each( ("blur focus focusin focusout load resize scroll unload click dblclick " +
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@ -716,7 +716,7 @@ test("toggle(Function, Function, ...)", function() {
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});
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});
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test(".live()/.die()", function() {
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test(".live()/.die()", function() {
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expect(62);
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expect(65);
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var submit = 0, div = 0, livea = 0, liveb = 0;
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var submit = 0, div = 0, livea = 0, liveb = 0;
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@ -921,7 +921,10 @@ test(".live()/.die()", function() {
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equals( livee, 0, "Verify that second handler doesn't." );
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equals( livee, 0, "Verify that second handler doesn't." );
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// Cleanup
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// Cleanup
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jQuery("span#liveSpan1 a, span#liveSpan1, span#liveSpan2 a, span#liveSpan2").die("click");
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jQuery("span#liveSpan1 a").die("click")
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jQuery("span#liveSpan1").die("click");
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jQuery("span#liveSpan2 a").die("click");
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jQuery("span#liveSpan2").die("click");
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// Test this, target and currentTarget are correct
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// Test this, target and currentTarget are correct
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jQuery('span#liveSpan1').live('click', function(e){
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jQuery('span#liveSpan1').live('click', function(e){
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@ -1122,41 +1125,417 @@ test("live with submit", function() {
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jQuery("body").die("submit");
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jQuery("body").die("submit");
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});
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});
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test("live with focus/blur", function(){
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test(".delegate()/.undelegate()", function() {
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expect(2);
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expect(65);
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// Setup
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var submit = 0, div = 0, livea = 0, liveb = 0;
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jQuery("<input type='text' id='livefb' />").appendTo("body");
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var $child = jQuery("#livefb"),
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jQuery("#body").delegate("div", "submit", function(){ submit++; return false; });
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child = $child[0],
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jQuery("#body").delegate("div", "click", function(){ div++; });
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pass = {};
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jQuery("#body").delegate("div#nothiddendiv", "click", function(){ livea++; });
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jQuery("#body").delegate("div#nothiddendivchild", "click", function(){ liveb++; });
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function worked(e){
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// Nothing should trigger on the body
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pass[e.type] = true;
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jQuery("body").trigger("click");
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equals( submit, 0, "Click on body" );
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equals( div, 0, "Click on body" );
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equals( livea, 0, "Click on body" );
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equals( liveb, 0, "Click on body" );
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// This should trigger two events
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jQuery("div#nothiddendiv").trigger("click");
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equals( submit, 0, "Click on div" );
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equals( div, 1, "Click on div" );
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equals( livea, 1, "Click on div" );
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equals( liveb, 0, "Click on div" );
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// This should trigger three events (w/ bubbling)
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jQuery("div#nothiddendivchild").trigger("click");
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equals( submit, 0, "Click on inner div" );
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equals( div, 2, "Click on inner div" );
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equals( livea, 2, "Click on inner div" );
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equals( liveb, 1, "Click on inner div" );
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// This should trigger one submit
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jQuery("div#nothiddendivchild").trigger("submit");
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equals( submit, 1, "Submit on div" );
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equals( div, 2, "Submit on div" );
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equals( livea, 2, "Submit on div" );
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equals( liveb, 1, "Submit on div" );
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// Make sure no other events were removed in the process
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jQuery("div#nothiddendivchild").trigger("click");
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equals( submit, 1, "undelegate Click on inner div" );
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equals( div, 3, "undelegate Click on inner div" );
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equals( livea, 3, "undelegate Click on inner div" );
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equals( liveb, 2, "undelegate Click on inner div" );
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// Now make sure that the removal works
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jQuery("#body").undelegate("div#nothiddendivchild", "click");
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jQuery("div#nothiddendivchild").trigger("click");
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equals( submit, 1, "undelegate Click on inner div" );
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equals( div, 4, "undelegate Click on inner div" );
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equals( livea, 4, "undelegate Click on inner div" );
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equals( liveb, 2, "undelegate Click on inner div" );
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// Make sure that the click wasn't removed too early
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jQuery("div#nothiddendiv").trigger("click");
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equals( submit, 1, "undelegate Click on inner div" );
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equals( div, 5, "undelegate Click on inner div" );
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equals( livea, 5, "undelegate Click on inner div" );
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equals( liveb, 2, "undelegate Click on inner div" );
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// Make sure that stopPropgation doesn't stop live events
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jQuery("#body").delegate("div#nothiddendivchild", "click", function(e){ liveb++; e.stopPropagation(); });
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jQuery("div#nothiddendivchild").trigger("click");
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equals( submit, 1, "stopPropagation Click on inner div" );
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equals( div, 6, "stopPropagation Click on inner div" );
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equals( livea, 6, "stopPropagation Click on inner div" );
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equals( liveb, 3, "stopPropagation Click on inner div" );
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// Make sure click events only fire with primary click
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var event = jQuery.Event("click");
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event.button = 1;
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jQuery("div#nothiddendiv").trigger(event);
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equals( livea, 6, "delegate secondary click" );
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jQuery("#body").undelegate("div#nothiddendivchild", "click");
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jQuery("#body").undelegate("div#nothiddendiv", "click");
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jQuery("#body").undelegate("div", "click");
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jQuery("#body").undelegate("div", "submit");
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// Test binding with a different context
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var clicked = 0, container = jQuery('#main')[0];
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jQuery("#main").delegate("#foo", "click", function(e){ clicked++; });
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jQuery("div").trigger('click');
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jQuery("#foo").trigger('click');
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jQuery("#main").trigger('click');
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jQuery("body").trigger('click');
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equals( clicked, 2, "delegate with a context" );
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// Make sure the event is actually stored on the context
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ok( jQuery.data(container, "events").live, "delegate with a context" );
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// Test unbinding with a different context
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jQuery("#main").undelegate("#foo", "click");
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jQuery("#foo").trigger('click');
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equals( clicked, 2, "undelegate with a context");
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// Test binding with event data
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jQuery("#body").delegate("#foo", "click", true, function(e){ equals( e.data, true, "delegate with event data" ); });
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jQuery("#foo").trigger("click");
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jQuery("#body").undelegate("#foo", "click");
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// Test binding with trigger data
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jQuery("#body").delegate("#foo", "click", function(e, data){ equals( data, true, "delegate with trigger data" ); });
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jQuery("#foo").trigger("click", true);
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jQuery("#body").undelegate("#foo", "click");
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// Test binding with different this object
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jQuery("#body").delegate("#foo", "click", jQuery.proxy(function(e){ equals( this.foo, "bar", "delegate with event scope" ); }, { foo: "bar" }));
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jQuery("#foo").trigger("click");
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jQuery("#body").undelegate("#foo", "click");
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// Test binding with different this object, event data, and trigger data
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jQuery("#body").delegate("#foo", "click", true, jQuery.proxy(function(e, data){
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equals( e.data, true, "delegate with with different this object, event data, and trigger data" );
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equals( this.foo, "bar", "delegate with with different this object, event data, and trigger data" );
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equals( data, true, "delegate with with different this object, event data, and trigger data")
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}, { foo: "bar" }));
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jQuery("#foo").trigger("click", true);
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jQuery("#body").undelegate("#foo", "click");
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// Verify that return false prevents default action
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jQuery("#body").delegate("#anchor2", "click", function(){ return false; });
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var hash = window.location.hash;
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jQuery("#anchor2").trigger("click");
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equals( window.location.hash, hash, "return false worked" );
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jQuery("#body").undelegate("#anchor2", "click");
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// Verify that .preventDefault() prevents default action
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jQuery("#body").delegate("#anchor2", "click", function(e){ e.preventDefault(); });
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var hash = window.location.hash;
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jQuery("#anchor2").trigger("click");
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equals( window.location.hash, hash, "e.preventDefault() worked" );
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jQuery("#body").undelegate("#anchor2", "click");
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// Test binding the same handler to multiple points
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var called = 0;
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function callback(){ called++; return false; }
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jQuery("#body").delegate("#nothiddendiv", "click", callback);
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jQuery("#body").delegate("#anchor2", "click", callback);
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jQuery("#nothiddendiv").trigger("click");
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equals( called, 1, "Verify that only one click occurred." );
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jQuery("#anchor2").trigger("click");
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equals( called, 2, "Verify that only one click occurred." );
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// Make sure that only one callback is removed
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jQuery("#body").undelegate("#anchor2", "click", callback);
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jQuery("#nothiddendiv").trigger("click");
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equals( called, 3, "Verify that only one click occurred." );
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jQuery("#anchor2").trigger("click");
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equals( called, 3, "Verify that no click occurred." );
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// Make sure that it still works if the selector is the same,
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// but the event type is different
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jQuery("#body").delegate("#nothiddendiv", "foo", callback);
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// Cleanup
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jQuery("#body").undelegate("#nothiddendiv", "click", callback);
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jQuery("#nothiddendiv").trigger("click");
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equals( called, 3, "Verify that no click occurred." );
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jQuery("#nothiddendiv").trigger("foo");
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equals( called, 4, "Verify that one foo occurred." );
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// Cleanup
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jQuery("#body").undelegate("#nothiddendiv", "foo", callback);
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// Make sure we don't loose the target by DOM modifications
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// after the bubble already reached the liveHandler
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var livec = 0, elemDiv = jQuery("#nothiddendivchild").html('<span></span>').get(0);
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jQuery("#body").delegate("#nothiddendivchild", "click", function(e){ jQuery("#nothiddendivchild").html(''); });
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jQuery("#body").delegate("#nothiddendivchild", "click", function(e){ if(e.target) {livec++;} });
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jQuery("#nothiddendiv span").click();
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equals( jQuery("#nothiddendiv span").length, 0, "Verify that first handler occurred and modified the DOM." );
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equals( livec, 1, "Verify that second handler occurred even with nuked target." );
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// Cleanup
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jQuery("#body").undelegate("#nothiddendivchild", "click");
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// Verify that .live() ocurs and cancel buble in the same order as
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// we would expect .bind() and .click() without delegation
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var lived = 0, livee = 0;
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// bind one pair in one order
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jQuery("#body").delegate('span#liveSpan1 a', 'click', function(){ lived++; return false; });
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jQuery("#body").delegate('span#liveSpan1', 'click', function(){ livee++; });
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jQuery('span#liveSpan1 a').click();
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equals( lived, 1, "Verify that only one first handler occurred." );
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equals( livee, 0, "Verify that second handler doesn't." );
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// and one pair in inverse
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jQuery("#body").delegate('span#liveSpan2', 'click', function(){ livee++; });
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jQuery("#body").delegate('span#liveSpan2 a', 'click', function(){ lived++; return false; });
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lived = 0;
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livee = 0;
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jQuery('span#liveSpan2 a').click();
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equals( lived, 1, "Verify that only one first handler occurred." );
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equals( livee, 0, "Verify that second handler doesn't." );
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// Cleanup
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jQuery("#body").undelegate("click");
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// Test this, target and currentTarget are correct
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jQuery("#body").delegate('span#liveSpan1', 'click', function(e){
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equals( this.id, 'liveSpan1', 'Check the this within a delegate handler' );
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equals( e.currentTarget.id, 'liveSpan1', 'Check the event.currentTarget within a delegate handler' );
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equals( e.target.nodeName.toUpperCase(), 'A', 'Check the event.target within a delegate handler' );
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});
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jQuery('span#liveSpan1 a').click();
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jQuery("#body").undelegate('span#liveSpan1', 'click');
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// Work with deep selectors
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livee = 0;
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function clickB(){ livee++; }
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jQuery("#body").delegate("#nothiddendiv div", "click", function(){ livee++; });
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jQuery("#body").delegate("#nothiddendiv div", "click", clickB);
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jQuery("#body").delegate("#nothiddendiv div", "mouseover", function(){ livee++; });
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equals( livee, 0, "No clicks, deep selector." );
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livee = 0;
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jQuery("#nothiddendivchild").trigger("click");
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equals( livee, 2, "Click, deep selector." );
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livee = 0;
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jQuery("#nothiddendivchild").trigger("mouseover");
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equals( livee, 1, "Mouseover, deep selector." );
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jQuery("#body").undelegate("#nothiddendiv div", "mouseover");
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livee = 0;
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jQuery("#nothiddendivchild").trigger("click");
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equals( livee, 2, "Click, deep selector." );
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livee = 0;
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jQuery("#nothiddendivchild").trigger("mouseover");
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equals( livee, 0, "Mouseover, deep selector." );
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jQuery("#body").undelegate("#nothiddendiv div", "click", clickB);
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|
||||||
|
livee = 0;
|
||||||
|
jQuery("#nothiddendivchild").trigger("click");
|
||||||
|
equals( livee, 1, "Click, deep selector." );
|
||||||
|
|
||||||
|
jQuery("#body").undelegate("#nothiddendiv div", "click");
|
||||||
|
});
|
||||||
|
|
||||||
|
test("undelegate all bound events", function(){
|
||||||
|
expect(1);
|
||||||
|
|
||||||
|
var count = 0;
|
||||||
|
var div = jQuery("#body");
|
||||||
|
|
||||||
|
div.delegate("div#nothiddendivchild", "click submit", function(){ count++; });
|
||||||
|
div.undelegate();
|
||||||
|
|
||||||
|
jQuery("div#nothiddendivchild").trigger("click");
|
||||||
|
jQuery("div#nothiddendivchild").trigger("submit");
|
||||||
|
|
||||||
|
equals( count, 0, "Make sure no events were triggered." );
|
||||||
|
});
|
||||||
|
|
||||||
|
test("delegate with multiple events", function(){
|
||||||
|
expect(1);
|
||||||
|
|
||||||
|
var count = 0;
|
||||||
|
var div = jQuery("#body");
|
||||||
|
|
||||||
|
div.delegate("div#nothiddendivchild", "click submit", function(){ count++; });
|
||||||
|
|
||||||
|
jQuery("div#nothiddendivchild").trigger("click");
|
||||||
|
jQuery("div#nothiddendivchild").trigger("submit");
|
||||||
|
|
||||||
|
equals( count, 2, "Make sure both the click and submit were triggered." );
|
||||||
|
|
||||||
|
jQuery("#body").undelegate();
|
||||||
|
});
|
||||||
|
|
||||||
|
test("delegate with change", function(){
|
||||||
|
var selectChange = 0, checkboxChange = 0;
|
||||||
|
|
||||||
|
var select = jQuery("select[name='S1']");
|
||||||
|
jQuery("#body").delegate("select[name='S1']", "change", function() {
|
||||||
|
selectChange++;
|
||||||
|
});
|
||||||
|
|
||||||
|
var checkbox = jQuery("#check2"),
|
||||||
|
checkboxFunction = function(){
|
||||||
|
checkboxChange++;
|
||||||
|
}
|
||||||
|
jQuery("#body").delegate("#check2", "change", checkboxFunction);
|
||||||
|
|
||||||
|
// test click on select
|
||||||
|
|
||||||
|
// second click that changed it
|
||||||
|
selectChange = 0;
|
||||||
|
select[0].selectedIndex = select[0].selectedIndex ? 0 : 1;
|
||||||
|
select.trigger("change");
|
||||||
|
equals( selectChange, 1, "Change on click." );
|
||||||
|
|
||||||
|
// test keys on select
|
||||||
|
selectChange = 0;
|
||||||
|
select[0].selectedIndex = select[0].selectedIndex ? 0 : 1;
|
||||||
|
select.trigger("change");
|
||||||
|
equals( selectChange, 1, "Change on keyup." );
|
||||||
|
|
||||||
|
// test click on checkbox
|
||||||
|
checkbox.trigger("change");
|
||||||
|
equals( checkboxChange, 1, "Change on checkbox." );
|
||||||
|
|
||||||
|
// test before activate on radio
|
||||||
|
|
||||||
|
// test blur/focus on textarea
|
||||||
|
var textarea = jQuery("#area1"), textareaChange = 0, oldVal = textarea.val();
|
||||||
|
jQuery("#body").delegate("#area1", "change", function() {
|
||||||
|
textareaChange++;
|
||||||
|
});
|
||||||
|
|
||||||
|
textarea.val(oldVal + "foo");
|
||||||
|
textarea.trigger("change");
|
||||||
|
equals( textareaChange, 1, "Change on textarea." );
|
||||||
|
|
||||||
|
textarea.val(oldVal);
|
||||||
|
jQuery("#body").undelegate("#area1", "change");
|
||||||
|
|
||||||
|
// test blur/focus on text
|
||||||
|
var text = jQuery("#name"), textChange = 0, oldTextVal = text.val();
|
||||||
|
jQuery("#body").delegate("#name", "change", function() {
|
||||||
|
textChange++;
|
||||||
|
});
|
||||||
|
|
||||||
|
text.val(oldVal+"foo");
|
||||||
|
text.trigger("change");
|
||||||
|
equals( textChange, 1, "Change on text input." );
|
||||||
|
|
||||||
|
text.val(oldTextVal);
|
||||||
|
jQuery("#body").die("change");
|
||||||
|
|
||||||
|
// test blur/focus on password
|
||||||
|
var password = jQuery("#name"), passwordChange = 0, oldPasswordVal = password.val();
|
||||||
|
jQuery("#body").delegate("#name", "change", function() {
|
||||||
|
passwordChange++;
|
||||||
|
});
|
||||||
|
|
||||||
|
password.val(oldPasswordVal + "foo");
|
||||||
|
password.trigger("change");
|
||||||
|
equals( passwordChange, 1, "Change on password input." );
|
||||||
|
|
||||||
|
password.val(oldPasswordVal);
|
||||||
|
jQuery("#body").undelegate("#name", "change");
|
||||||
|
|
||||||
|
// make sure die works
|
||||||
|
|
||||||
|
// die all changes
|
||||||
|
selectChange = 0;
|
||||||
|
jQuery("#body").undelegate("select[name='S1']", "change");
|
||||||
|
select[0].selectedIndex = select[0].selectedIndex ? 0 : 1;
|
||||||
|
select.trigger("change");
|
||||||
|
equals( selectChange, 0, "Die on click works." );
|
||||||
|
|
||||||
|
selectChange = 0;
|
||||||
|
select[0].selectedIndex = select[0].selectedIndex ? 0 : 1;
|
||||||
|
select.trigger("change");
|
||||||
|
equals( selectChange, 0, "Die on keyup works." );
|
||||||
|
|
||||||
|
// die specific checkbox
|
||||||
|
jQuery("#body").undelegate("#check2", "change", checkboxFunction);
|
||||||
|
checkbox.trigger("change");
|
||||||
|
equals( checkboxChange, 1, "Die on checkbox." );
|
||||||
|
});
|
||||||
|
|
||||||
|
test("delegate with submit", function() {
|
||||||
|
var count1 = 0, count2 = 0;
|
||||||
|
|
||||||
|
jQuery("#body").delegate("#testForm", "submit", function(ev) {
|
||||||
|
count1++;
|
||||||
|
ev.preventDefault();
|
||||||
|
});
|
||||||
|
|
||||||
|
jQuery(document).delegate("body", "submit", function(ev) {
|
||||||
|
count2++;
|
||||||
|
ev.preventDefault();
|
||||||
|
});
|
||||||
|
|
||||||
|
if ( jQuery.support.submitBubbles ) {
|
||||||
|
jQuery("#testForm input[name=sub1]")[0].click();
|
||||||
|
equals(count1,1 );
|
||||||
|
equals(count2,1);
|
||||||
|
} else {
|
||||||
|
jQuery("#testForm input[name=sub1]")[0].click();
|
||||||
|
jQuery("#testForm input[name=T1]").trigger({type: "keypress", keyCode: 13});
|
||||||
|
equals(count1,2);
|
||||||
|
equals(count2,2);
|
||||||
}
|
}
|
||||||
|
|
||||||
$child.live("focus", worked);
|
jQuery("#body").undelegate();
|
||||||
$child.live("blur", worked);
|
jQuery(document).undelegate();
|
||||||
|
|
||||||
// Test
|
|
||||||
child.focus();
|
|
||||||
if (pass.focus)
|
|
||||||
ok(true, "Test live() with focus event");
|
|
||||||
else
|
|
||||||
ok(true, "Cannot test focus because the window isn't focused");
|
|
||||||
|
|
||||||
child.blur();
|
|
||||||
if (pass.blur)
|
|
||||||
ok( true, "Test live() with blur event");
|
|
||||||
else
|
|
||||||
ok(true, "Cannot test blur because the window isn't focused");
|
|
||||||
|
|
||||||
// Teardown
|
|
||||||
$child.die("focus", worked);
|
|
||||||
$child.die("blur", worked);
|
|
||||||
$child.remove();
|
|
||||||
window.scrollTo(0,0);
|
|
||||||
});
|
});
|
||||||
|
|
||||||
test("Non DOM element events", function() {
|
test("Non DOM element events", function() {
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue