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Made a bunch of changes to the way that the $() compatability code is handled.

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This commit is contained in:
John Resig 2006-07-03 22:31:37 +00:00
parent 05a4b784e8
commit abf3054667
1 changed files with 25 additions and 32 deletions
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57
jquery/jquery.js vendored
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@ -12,11 +12,35 @@
// Global undefined variable // Global undefined variable
window.undefined = window.undefined; window.undefined = window.undefined;
// Map over the $ in case of overwrite
if ( $ ) var ._$ = $;
/** /**
* Create a new jQuery Object * Create a new jQuery Object
* @constructor * @constructor
*/ */
function jQuery(a,c) { var $ = jQuery = function(a,c) {
/*
* Handle support for overriding other $() functions. Way too many libraries
* provide this function to simply ignore it and overwrite it.
*/
// Check to see if this is a possible collision case
if ( _$ && !c && ( a.constructor == String &&
// Make sure that the expression is a colliding one
!/[^a-zA-Z0-9_-]/.test(a) &&
// and that there are no elements that match it
// (this is the one truly ambiguous case)
!document.getElementsByTagName(a).length ) ||
// Watch for an array being passed in (Prototype 1.5)
a.constructor == Array )
// Use the default method, in case it works some voodoo
return _$( a );
// Watch for when a jQuery object is passed in as an arg // Watch for when a jQuery object is passed in as an arg
if ( a && a.jquery ) if ( a && a.jquery )
return a; return a;
@ -32,37 +56,6 @@ function jQuery(a,c) {
); );
} }
/**
* The jQuery query object.
*/
if ( !window.$ )
var $ = jQuery;
/*
* Handle support for overriding other $() functions. Way too many libraries
* provide this function to simply ignore it and overwrite it.
*/
else
var $ = function(a,c) {
// Check to see if this is a possible collision case
if ( !c && a.constructor == String &&
// Make sure that the expression is a colliding one
!/[^a-zA-Z0-9_-]/.test(a) &&
// and that there are no elements that match it
// (this is the one truly ambiguous case)
!document.getElementsByTagName(a).length ) {
// Only return the element if it's found
var obj = document.getElementById(a);
if ( obj ) return obj;
}
return jQuery(a,c);
};
jQuery.fn = jQuery.prototype = { jQuery.fn = jQuery.prototype = {
/** /**
* The current SVN version of jQuery. * The current SVN version of jQuery.