The original jQuery source code, released Jan 14th, 2006 at BarCamp NYC.

View the annotations using Genius. Not shown: Ajax module, FX module, Advanced Events Module

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Raw source code

/*
* JQuery (http://jquery.com/)
* By John Resig (http://ejohn.org/)
* Under an Attribution, Share Alike License
*/
function $(a,c) {
if ( a == null ) return;
// Since we're using Prototype's $ function,
// be nice and have backwards compatability
if ( typeof Prototype != "undefined" && a.constructor == String ) {
var re = new RegExp( "[^a-zA-Z0-9_-]" );
if ( !re.test(a) ) {
var c = ((c&&c.documentElement) || document);
if ( c.getElementsByTagName(a).length == 0 ) {
var obj = c.getElementById(a);
if ( obj != null ) return obj;
}
}
}
// Load Dynamic Function List
var self = {
cur: $.Select(a,c),
// The only two getters
size: function() {
return this.get().length;
},
get: function(i) {
if ( i == null )
return this.$$unclean ? $.sibling(this.$$unclean[0]) : this.cur;
else
return (this.get())[i];
},
"_get": function(i) {
if ( i == null )
return this.cur;
else
return this.cur[i];
},
each: function(f) {
for ( var i = 0; this.cur && i < this._get().length; i++ ) {
if ( this._get(i) ) {
this._get(i).$$tmpFunc = f;
this._get(i).$$tmpFunc(i);
this._get(i).$$tmpFunc = null;
}
}
return this;
},
set: function(a,b) {
return this.each(function(){
if ( b == null )
for ( var j in a )
this[j] = a[j];
else {
if ( b.constructor != String ) {
for ( var i in b ) {
var c = $.Select(i,this);
for ( var j in c )
c[j][a] = b[i];
}
} else
this[a] = b;
}
});
},
html: function(h) {
return this.set( "innerHTML", h );
},
// Deprecated
style: function(a,b){ return this.css(a,b); },
css: function(a,b) {
return this.each(function(){
if ( !b )
for ( var j in a )
this.style[j] = a[j];
else
this.style[a] = b;
});
},
toggle: function() {
return this.each(function(){
var d = $.getCSS(this,"display");
if ( d == "none" || d == '' )
$(this).show();
else
$(this).hide();
});
},
show: function(a) {
return this.each(function(){
this.style.display = this.$$oldblock ? this.$$oldblock : 'block';
});
},
hide: function(a) {
return this.each(function(){
this.$$oldblock = $.getCSS(this,"display");
this.style.display = 'none';
});
},
addClass: function(c) {
return this.each(function(){
if ($.hasWord(this,c)) return;
this.className += ( this.className.length > 0 ? " " : "" ) + c;
});
},
removeClass: function(c) {
return this.each(function(){
if (!$.hasWord(this,c)) return;
var ret = "";
var s = this.className.split( " " );
for ( var i = 0; i < s.length; i++ )
if ( s[i] != c )
ret += ( ret.length > 0 ? " " : "" ) + s[i];
this.className = ret;
});
},
remove: function() {
this.each(function(){this.parentNode.removeChild( this );});
this.cur = [];
return this;
},
wrap: function() {
var a = $.clean(arguments);
return this.each(function(){
var b = a[0].cloneNode(true);
this.parentNode.insertBefore( b, this );
while ( b.firstChild ) b = b.firstChild;
b.appendChild( this );
});
},
append: function() {
var a = $.clean(arguments);
return this.each(function(){
for ( var i in a )
if ( a[i].cloneNode != null )
this.appendChild( a[i].cloneNode(true) );
});
},
appendTo: function() {
var self = this;
var a = arguments;
return this.each(function(){
for ( var i = 0; i < a.length; i++ ) {
if ( self.$$unclean )
$(a[i]).append( self.get() );
else
$(a[i]).append( this );
}
});
},
prepend: function() {
var a = $.clean(arguments);
return this.each(function(){
for ( var i = a.length - 1; i >= 0; i-- )
this.insertBefore( a[i].cloneNode(true), this.firstChild );
});
},
before: function() {
var a = $.clean(arguments);
return this.each(function(){
for ( var i in a )
this.parentNode.insertBefore( a[i].cloneNode(true), this );
});
},
after: function() {
var a = $.clean(arguments);
return this.each(function(){
for ( var i = a.length - 1; i >= 0; i-- )
this.parentNode.insertBefore( a[i].cloneNode(true), this.nextSibling );
});
},
bind: function(t,f) {
return this.each(function(){addEvent(this,t,f);});
},
unbind: function(t,f) {
return this.each(function(){removeEvent(this,t,f);});
},
find: function(t) {
var old = [], ret = [];
this.each(function(){
old.push( this );
ret = $.merge( ret, $.Select(t,this) );
});
this.old = old;
this.cur = ret;
return this;
},
end: function() {
this.cur = this.old;
return this;
},
filter: function(t) {
this.cur = $.filter(t,this.cur).r;
return this;
},
not: function(t) {
if ( t.constructor == String )
this.cur = $.filter(t,this.cur,false).r;
else
this.cur = $.grep(this.cur,function(a){return a != t;});
return this;
},
add: function(t) {
if ( t.constructor == String )
this.cur = $.merge(this.cur,$.Select(t));
else if ( t.constructor == Array )
this.cur = $.merge(this.cur,t);
else
this.cur = $.merge(this.cur,new Array(t));
return this;
}
};
for ( var i in $.fn ) {
if ( self[i] != null )
self["_"+i] = self[i];
self[i] = $.fn[i];
}
if ( typeof Prototype != "undefined" && a.constructor != String ) {
for ( var i in self ) {(function(j){
try {
if ( j.indexOf('on') != 0 || j == "onready" ) {
a[j] = function() {
return self[j].apply(self,arguments);
};
}
} catch (e){}
})(i);}
return a;
}
return self;
}
function $C(a) {
if ( a.indexOf('<') >= 0 ) {
if ( a.indexOf('<tr') >= 0 ) {
var r = $C("table").html("<tbody>"+a+"</tbody>");
r.$$unclean = r.get(0).childNodes[0].childNodes;
} else {
var r = $C("div").html(a);
r.$$unclean = r.get(0).childNodes;
}
return r;
} else {
return $(document.createElement(a),document);
}
}
$.getCSS = function(e,p) {
if (e.style[p])
return e.style[p];
else if (e.currentStyle)
return e.currentStyle[p];
else if (document.defaultView && document.defaultView.getComputedStyle) {
p = p.replace(/([A-Z])/g,"-$1");
p = p.toLowerCase();
return document.defaultView.getComputedStyle(e,"").getPropertyValue(p);
} else
return null;
};
$.clean = function(a) {
var r = new Array();
for ( var i = 0; i < a.length; i++ ) {
if ( a[i].constructor == String ) {
//a[i] = a[i].replace( /#([a-zA-Z0-9_-]+)/g, " id='$1' " );
//a[i] = a[i].replace( /\.([a-zA-Z0-9_-]+)/g, " class='$1' " );
var div = document.createElement("div");
div.innerHTML = a[i];
for ( var j = 0; j < div.childNodes.length; j++ )
r.push( div.childNodes[j] );
} else if ( a[i].length ) {
for ( var j = 0; j < a[i].length; j++ )
r.push( a[i][j] );
} else {
r.push( a[i] ); //.cloneNode(true) );
}
}
return r;
};
$.g = {
'': "m[2] == '*' || a.nodeName.toUpperCase() == m[2].toUpperCase()",
'#': "a.id == m[2]",
':': {
lt: "i < m[3]-0",
gt: "i > m[3]-0",
nth: "m[3] - 0 == i",
eq: "m[3] - 0 == i",
first: "i == 0",
last: "i == r.length - 1",
even: "i % 2 == 0",
odd: "i % 2 == 1",
"first-child": "$.sibling(a,0).cur",
"nth-child": "(m[3] == 'even'?$.sibling(a,m[3]).n % 2 == 0 :(m[3] == 'odd'?$.sibling(a,m[3]).n % 2 == 1:$.sibling(a,m[3]).cur))",
"last-child": "$.sibling(a,0,true).cur",
"nth-last-child": "$.sibling(a,m[3],true).cur",
"first-of-type": "$.ofType(a,0)",
"nth-of-type": "$.ofType(a,m[3])",
"last-of-type": "$.ofType(a,0,true)",
"nth-last-of-type": "$.ofType(a,m[3],true)",
"only-of-type": "$.ofType(a) == 1",
"only-child": "$.sibling(a).length == 1",
parent: "a.childNodes.length > 0",
empty: "a.childNodes.length == 0",
lang: "a.lang == m[3]",
root: "a == ( a.ownerDocument ? a.ownerDocument : document ).documentElement",
contains: "(a.innerText || a.innerHTML).indexOf(m[3]) != -1",
visible: "(!a.type || a.type != 'hidden') && ($.getCSS(a,'display') != 'none' && $.getCSS(a,'visibility') != 'hidden')",
hidden: "(a.type && a.type == 'hidden') || $.getCSS(a,'display') == 'none' || $.getCSS(a,'visibility') == 'hidden'",
enabled: "a.disabled == false",
disabled: "a.disabled",
checked: "a.checked",
indeterminate: "a.checked != null && !a.checked"
},
".": "$.hasWord(a.className,m[2]) || $.hasWord(a.getAttribute('class'),m[2])",
"@": {
"=": "a.getAttribute(m[3]) == m[4]",
"!=": "a.getAttribute(m[3]) != m[4]",
"~=": "$.hasWord(a.getAttribute(m[3]),m[4])",
"|=": "a.getAttribute(m[3])?a.getAttribute(m[3]).indexOf(m[4])==0:false",
"^=": "a.getAttribute(m[3])?a.getAttribute(m[3]).indexOf(m[4])==0:false",
"$=": "a.getAttribute(m[3]) != null ? a.getAttribute(m[3]).substr( a.getAttribute(m[3]).length - m[4].length, m[4].length ) == m[4] : false",
"*=": "a.getAttribute(m[3])?a.getAttribute(m[3]).indexOf(m[4]) != -1 : false",
"": "m[3] == '*' ? a.attributes.length > 0 : a.getAttribute(m[3])"
},
"[": "$.Select(m[2],a).length > 0"
};
// Frequently-used Accessors
window.cssQuery = $.Select;
document.getElementsByClass = function(a){return $.Select("."+a)};
document.getElementsBySelector = $.Select;
$.fn = {};
$.Select = function( t, context ) {
if ( context == null )
var context = document;
if ( t.constructor != String )
return new Array( t );
if ( t.indexOf("//") == 0 ) {
context = context.documentElement;
t = t.substr(2,t.length);
} else if ( t.indexOf("/") == 0 ) {
context = context.documentElement;
t = t.substr(1,t.length);
// Assume the root element is right :(
if ( t.indexOf('/') )
t = t.substr(t.indexOf('/'),t.length);
}
// Make Xpath Axes Sane
var re = new RegExp( "/?descendant::", "i" );
t = t.replace( re, " " );
var re = new RegExp( "/?child::", "i" );
t = t.replace( re, "/" );
// If only...
//var re = new RegExp( "/?following-sibling::", "i" );
//t = t.replace( re, " + " );
var re = new RegExp( "/?preceding-sibling::", "i" );
t = t.replace( re, " ~ " );
var re = new RegExp( "/?self::", "i" );
t = t.replace( re, "" );
var re = new RegExp( "/?parent::", "i" );
t = t.replace( re, " .. " );
// following
// preceding
// ancestor
// ancestor-or-self
// descendant-or-self
var ret = new Array( context );
var done = new Array();
var last = null;
while ( t.length > 0 && last != t ) {
var r = new Array();
last = t;
t = $.cleanSpaces(t);
var re = new RegExp( "^//", "i" );
t = t.replace( re, "" );
if ( t.indexOf('..') == 0 || t.indexOf('/..') == 0 ) {
if ( t.indexOf('/') == 0 )
t = t.substr(1,t.length);
r = $.map( ret, function(a){ return a.parentNode; } );
t = t.substr(2,t.length);
t = $.cleanSpaces(t);
} else if ( t.indexOf('>') == 0 || t.indexOf('/') == 0 ) {
r = $.map( ret, function(a){ return ( a.childNodes.length > 0 ? $.sibling( a.firstChild ) : null ); } );
t = t.substr(1,t.length);
t = $.cleanSpaces(t);
} else if ( t.indexOf('+') == 0 ) {
r = $.map( ret, function(a){ return $.sibling(a).next; } );
t = t.substr(1,t.length);
t = $.cleanSpaces(t);
} else if ( t.indexOf('~') == 0 ) {
r = $.map( ret, function(a){
var r = new Array();
var s = $.sibling(a);
if ( s.n > 0 )
for ( var i = s.n; i < s.length; i++ )
r.push( s[i] );
return r;
} );
t = t.substr(1,t.length);
t = $.cleanSpaces(t);
} else if ( t.indexOf(',') == 0 || t.indexOf('|') == 0 ) {
if ( ret[0] == context ) ret.shift();
done = $.merge( done, ret );
r = ret = new Array( context );
t = " " + t.substr(1,t.length);
} else {
var re = new RegExp( "^([#.]?)([a-z0-9\\*-]*)", "i" );
var m = re.exec(t);
if ( m[1] == "#" ) {
var oid = document.getElementById(m[2]);
if ( oid != null ) r = [ oid ];
else r = [];
}
if ( m[2] == "" || m[1] == "." ) m[2] = "*";
else t = t.replace( re, "" );
for ( var i = 0; i < ret.length; i++ ) {
var o = ret[i];
if ( o ) {
switch( m[2] ) {
case '*':
r = $.merge( $.getAll(o), r );
break;
case 'text': case 'radio': case 'checkbox': case 'hidden':
case 'button': case 'submit': case 'image': case 'password':
case 'reset': case 'image': case 'file':
r = $.merge( $.grep( o.getElementsByTagName( "input" ),
function(a){ return a.type == m[2] }), r );
break;
case 'input':
r = $.merge( o.getElementsByTagName( "input" ), r );
r = $.merge( o.getElementsByTagName( "select" ), r );
r = $.merge( o.getElementsByTagName( "textarea" ), r );
break;
default:
r = $.merge( o.getElementsByTagName( m[2] ), r );
break;
}
}
}
}
var val = $.filter(t,r);
r = val.r;
t = val.t;
t = $.cleanSpaces(t);
ret = r;
}
if ( ret && ret[0] == context ) ret.shift();
done = $.merge( done, ret );
return done;
};
$.filter = function(t,r,not) {
var g = $.grep;
if ( not == false ) var g = function(a,f) {return $.grep(a,f,true);};
while ( t.length > 0 && t.match(/^[:\\.#\\[a-zA-Z\\*]/) ) {
var re = new RegExp( "^\\[ *@([a-z0-9\\(\\)-]+) *([~!\\|\\*$^=]*) *'?\"?([^'\"]*)'?\"? *\\]", "i" );
var m = re.exec(t);
if ( m != null ) {
m = new Array( '', '@', m[2], m[1], m[3] );
} else {
var re = new RegExp( "^(\\[) *([^\\]]*) *\\]", "i" );
var m = re.exec(t);
if ( m == null ) {
var re = new RegExp( "^(:)([a-z0-9\\*-]*)\\( *[\"']?([^ \\)'\"]*)['\"]? *\\)", "i" );
var m = re.exec(t);
if ( m == null ) {
var re = new RegExp( "^([:\\.#]*)([a-z0-9\\*-]*)", "i" );
var m = re.exec(t);
}
}
}
t = t.replace( re, "" );
if ( m[1] == ":" && m[2] == "not" )
r = $.filter(m[3],r,false).r;
else {
if ( $.g[m[1]].constructor == String )
var f = $.g[m[1]];
else if ( $.g[m[1]][m[2]] )
var f = $.g[m[1]][m[2]];
if ( f != null ) {
eval("f = function(a,i){return " + f + "}");
r = g( r, f );
}
}
}
return { r: r, t: t };
};
$.cleanSpaces = function(t) {
var re = new RegExp("^\\s+");
t = t.replace( re, "" );
var re = new RegExp("\\s+$");
t = t.replace( re, "" );
return t;
};
$.ofType = function(a,n,e) {
var t = $.grep($.sibling(a),function(b){return b.nodeName == a.nodeName});
if ( e ) n = t.length - n - 1;
return n != null ? t[n] == a : t.length;
};
$.sibling = function(a,n,e) {
var type = new Array();
var tmp = a.parentNode.childNodes;
for ( var i = 0; i < tmp.length; i++ ) {
if ( tmp[i].nodeType == 1 )
type.push( tmp[i] );
if ( tmp[i] == a )
type.n = type.length - 1;
}
if ( e ) n = type.length - n - 1;
type.cur = ( type[n] == a );
type.prev = ( type.n > 0 ? type[type.n - 1] : null );
type.next = ( type.n < type.length - 1 ? type[type.n + 1] : null );
return type;
};
$.hasWord = function(e,a) {
if ( e == null ) return false;
if ( e.className != null ) e = e.className;
var s = e.split( " " );
for ( var i = 0; i < s.length; i++ )
if ( s[i] == a ) return true;
return false;
};
$.getAll = function(o,r) {
if(!r) var r = new Array();
var s = o.childNodes;
for ( var i = 0; i < s.length; i++ ) {
if ( s[i].nodeType == 1 ) {
r.push(s[i]);
$.getAll( s[i], r );
}
}
return r;
};
$.merge = function(a,b) {
for ( var i = 0; i < a.length; i++ ) {
var c = true;
for ( var j = 0; j < b.length; j++ )
if ( a[i] == b[j] )
c = false;
if ( c )
b.push( a[i] );
}
return b;
};
$.grep = function(a,f,s) {
var r = new Array();
if ( a != null )
for ( var i = 0; i < a.length; i++ )
if ( (!s && f(a[i],i)) || (s && !f(a[i],i)) )
r.push( a[i] );
return r;
};
$.map = function(a,f) {
var r = new Array();
for ( var i = 0; i < a.length; i++ ) {
var t = f(a[i],i);
if ( t != null ) {
if ( t.constructor != Array ) t = new Array(t);
r = $.merge( t, r );
}
}
return r;
};
// addEvent/removeEvent
// Original by Dean Edwards
// Modified by John Resig
function addEvent(element, type, handler) {
if (!handler.$$guid) handler.$$guid = addEvent.guid++;
if (!element.events) element.events = {};
var handlers = element.events[type];
if (!handlers) {
handlers = element.events[type] = {};
if (element["on" + type])
handlers[0] = element["on" + type];
}
handlers[handler.$$guid] = handler;
element["on" + type] = handleEvent;
};
addEvent.guid = 1;
function removeEvent(element, type, handler) {
if (element.events) {
if (type && element.events[type]) {
if ( handler ) {
delete element.events[type][handler.$$guid];
} else {
for ( var i in element.events[type] )
removeEvent( element, type, element.events[type][i] );
}
} else {
for ( var i in element.events )
removeEvent( element, i );
}
}
};
function handleEvent(event) {
var returnValue = true;
event = event || fixEvent(window.event);
var handlers = [];
for ( var i in this.events[event.type] )
handlers.push( this.events[event.type][i] );
//var handlers = this.events[event.type];
for (var i in handlers) {
try {
if ( handlers[i].constructor == Function ) {
this.$$handleEvent = handlers[i];
if (this.$$handleEvent(event) === false) {
event.preventDefault();
event.stopPropagation();
returnValue = false;
}
}
} catch(e){}
}
return returnValue;
};
function fixEvent(event) {
event.preventDefault = fixEvent.preventDefault;
event.stopPropagation = fixEvent.stopPropagation;
return event;
};
fixEvent.preventDefault = function() {
this.returnValue = false;
};
fixEvent.stopPropagation = function() {
this.cancelBubble = true;
};
// Move to module
$.fn.text = function(e) {
if ( !e ) var e = this.cur;
var t = "";
for ( var j = 0; j < e.length; j++ ) {
for ( var i = 0; i < e[j].childNodes.length; i++ )
t += e[j].childNodes[i].nodeType != 1 ?
e[j].childNodes[i].nodeValue :
$.fn.text(e[j].childNodes[i].childNodes);
}
return t;
};
setTimeout(function(){
if ( typeof Prototype != "undefined" && $.g == null && $.clean == null )
throw "Error: You are overwriting jQuery, please include jQuery last.";
}, 1000);