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Brought the attributes module more inline with the jQuery style guidelines.

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This commit is contained in:
jeresig 2009-12-18 11:27:56 -05:00
parent 99d83fbd6d
commit f036630692
1 changed files with 58 additions and 35 deletions
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93
src/attributes.js
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@ -1,19 +1,25 @@
var rclass = /[\n\t]/g;
var rclass = /[\n\t]/g,
rspace = /\s+/,
rreturn = /\r/g,
rspecialurl = /href|src|style/,
rtype = /(button|input)/i,
rfocusable = /(button|input|object|select|textarea)/i,
rclickable = /^(a|area)$/i;
jQuery.fn.extend({
attr: function( name, value ) {
return access(this, name, value, true, jQuery.attr);
return access( this, name, value, true, jQuery.attr );
},
addClass: function( value ) {
if(jQuery.isFunction(value)) {
if ( jQuery.isFunction(value) ) {
return this.each(function() {
jQuery(this).addClass( value.call(this) );
});
}
if ( value && typeof value === "string" ) {
var classNames = (value || "").split(/\s+/);
var classNames = (value || "").split( rspace );
for ( var i = 0, l = this.length; i < l; i++ ) {
var elem = this[i];
@ -21,6 +27,7 @@ jQuery.fn.extend({
if ( elem.nodeType === 1 ) {
if ( !elem.className ) {
elem.className = value;
} else {
var className = " " + elem.className + " ";
for ( var c = 0, cl = classNames.length; c < cl; c++ ) {
@ -37,14 +44,14 @@ jQuery.fn.extend({
},
removeClass: function( value ) {
if(jQuery.isFunction(value)) {
if ( jQuery.isFunction(value) ) {
return this.each(function() {
jQuery(this).removeClass( value.call(this) );
});
}
if ( (value && typeof value === "string") || value === undefined ) {
var classNames = (value || "").split(/\s+/);
var classNames = (value || "").split(rspace);
for ( var i = 0, l = this.length; i < l; i++ ) {
var elem = this[i];
@ -56,6 +63,7 @@ jQuery.fn.extend({
className = className.replace(" " + classNames[c] + " ", " ");
}
elem.className = className.substring(1, className.length - 1);
} else {
elem.className = "";
}
@ -82,20 +90,22 @@ jQuery.fn.extend({
var elem = this[0];
if ( elem ) {
if( jQuery.nodeName( elem, 'option' ) ) {
if ( jQuery.nodeName( elem, "option" ) ) {
return (elem.attributes.value || {}).specified ? elem.value : elem.text;
}
// We need to handle select boxes special
if ( jQuery.nodeName( elem, "select" ) ) {
var index = elem.selectedIndex,
values = [],
options = elem.options,
one = elem.type == "select-one";
one = elem.type === "select-one";
// Nothing was selected
if ( index < 0 ) {
return null;
}
// Loop through all the selected options
for ( var i = one ? index : 0, max = one ? index + 1 : options.length; i < max; i++ ) {
var option = options[ i ];
@ -108,6 +118,7 @@ jQuery.fn.extend({
if ( one ) {
return value;
}
// Multi-Selects return an array
values.push( value );
}
@ -117,7 +128,7 @@ jQuery.fn.extend({
}
// Everything else, we just grab the value
return (elem.value || "").replace(/\r/g, "");
return (elem.value || "").replace(rreturn, "");
}
@ -128,25 +139,28 @@ jQuery.fn.extend({
if ( typeof value === "number" ) {
value += '';
}
var val = value;
return this.each(function(){
if(jQuery.isFunction(value)) {
if ( jQuery.isFunction(value) ) {
val = value.call(this);
// Typecast each time if the value is a Function and the appended
// value is therefore different each time.
if( typeof val === "number" ) {
if ( typeof val === "number" ) {
val += '';
}
}
if ( this.nodeType != 1 ) {
if ( this.nodeType !== 1 ) {
return;
}
if ( jQuery.isArray(val) && /radio|checkbox/.test( this.type ) ) {
this.checked = jQuery.inArray(this.value || this.name, val) >= 0;
}
else if ( jQuery.nodeName( this, "select" ) ) {
} else if ( jQuery.nodeName( this, "select" ) ) {
var values = jQuery.makeArray(val);
jQuery( "option", this ).each(function(){
@ -156,6 +170,7 @@ jQuery.fn.extend({
if ( !values.length ) {
this.selectedIndex = -1;
}
} else {
this.value = val;
}
@ -173,27 +188,31 @@ jQuery.each({
toggleClass: function( classNames, state ) {
var type = typeof classNames;
if ( type === "string" ) {
// toggle individual class names
var isBool = typeof state === "boolean", className, i = 0,
classNames = classNames.split( /\s+/ );
classNames = classNames.split( rspace );
while ( (className = classNames[ i++ ]) ) {
// check each className given, space seperated list
state = isBool ? state : !jQuery(this).hasClass( className );
jQuery(this)[ state ? "addClass" : "removeClass" ]( className );
}
} else if ( type === "undefined" || type === "boolean" ) {
if ( this.className ) {
// store className if set
jQuery.data( this, "__className__", this.className );
}
// toggle whole className
this.className = this.className || classNames === false ? "" : jQuery.data( this, "__className__" ) || "";
}
}
}, function(name, fn){
jQuery.fn[ name ] = function(val, state){
if( jQuery.isFunction( val ) ) {
if ( jQuery.isFunction( val ) ) {
return this.each(function() { jQuery(this)[ name ]( val.call(this), state ); });
}
@ -215,7 +234,7 @@ jQuery.extend({
attr: function( elem, name, value ) {
// don't set attributes on text and comment nodes
if (!elem || elem.nodeType == 3 || elem.nodeType == 8) {
if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 ) {
return undefined;
}
@ -232,55 +251,58 @@ jQuery.extend({
// Only do all the following if this is a node (faster for style)
if ( elem.nodeType === 1 ) {
// These attributes require special treatment
var special = /href|src|style/.test( name );
var special = rspecialurl.test( name );
// Safari mis-reports the default selected property of a hidden option
// Accessing the parent's selectedIndex property fixes it
if ( name == "selected" && elem.parentNode ) {
if ( name === "selected" && elem.parentNode ) {
elem.parentNode.selectedIndex;
}
// If applicable, access the attribute via the DOM 0 way
if ( name in elem && notxml && !special ) {
if ( set ) {
// We can't allow the type property to be changed (since it causes problems in IE)
if ( name == "type" && /(button|input)/i.test(elem.nodeName) && elem.parentNode ) {
if ( name === "type" && rtype.test( elem.nodeName ) && elem.parentNode ) {
throw "type property can't be changed";
}
// browsers index elements by id/name on forms, give priority to attributes.
if( jQuery.nodeName( elem, "form" ) ) {
// convert the value to a string (all browsers do this but IE) see #1070
elem.setAttribute( name, "" + value );
} else {
elem[ name ] = value;
}
}
// browsers index elements by id/name on forms, give priority to attributes.
if( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {
if ( jQuery.nodeName( elem, "form" ) && elem.getAttributeNode(name) ) {
return elem.getAttributeNode( name ).nodeValue;
}
// elem.tabIndex doesn't always return the correct value when it hasn't been explicitly set
// http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
if ( name == "tabIndex" ) {
if ( name === "tabIndex" ) {
var attributeNode = elem.getAttributeNode( "tabIndex" );
return attributeNode && attributeNode.specified
? attributeNode.value
: /(button|input|object|select|textarea)/i.test(elem.nodeName)
? 0
: /^(a|area)$/i.test(elem.nodeName) && elem.href
? 0
: undefined;
return attributeNode && attributeNode.specified ?
attributeNode.value :
rfocusable.test( elem.nodeName ) || rclickable.test( elem.nodeName ) && elem.href ?
0 :
undefined;
}
return elem[ name ];
}
if ( !jQuery.support.style && notxml && name == "style" ) {
if ( !jQuery.support.style && notxml && name === "style" ) {
if ( set ) {
elem.style.cssText = "" + value;
}
return elem.style.cssText;
}
@ -288,10 +310,11 @@ jQuery.extend({
// convert the value to a string (all browsers do this but IE) see #1070
elem.setAttribute( name, "" + value );
}
var attr = !jQuery.support.hrefNormalized && notxml && special
var attr = !jQuery.support.hrefNormalized && notxml && special ?
// Some attributes require a special call on IE
? elem.getAttribute( name, 2 )
: elem.getAttribute( name );
elem.getAttribute( name, 2 ) :
elem.getAttribute( name );
// Non-existent attributes return null, we normalize to undefined
return attr === null ? undefined : attr;
@ -299,6 +322,6 @@ jQuery.extend({
// elem is actually elem.style ... set the style
// Using attr for specific style information is now deprecated. Use style insead.
return jQuery.style(elem, name, value);
return jQuery.style( elem, name, value );
}
});