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define( [
"../core",
"../var/document",
"../core/readyException",
"../deferred"
], function( jQuery, document ) {
"use strict";
// The deferred used on DOM ready
var readyList = jQuery.Deferred();
jQuery.fn.ready = function( fn ) {
readyList
.then( fn )
// Wrap jQuery.readyException in a function so that the lookup
// happens at the time of error handling instead of callback
// registration.
.catch( function( error ) {
jQuery.readyException( error );
} );
return this;
};
jQuery.extend( {
// Is the DOM ready to be used? Set to true once it occurs.
isReady: false,
// A counter to track how many items to wait for before
// the ready event fires. See #6781
readyWait: 1,
// Handle when the DOM is ready
ready: function( wait ) {
// Abort if there are pending holds or we're already ready
if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) {
return;
}
// Remember that the DOM is ready
jQuery.isReady = true;
// If a normal DOM Ready event fired, decrement, and wait if need be
if ( wait !== true && --jQuery.readyWait > 0 ) {
return;
}
// If there are functions bound, to execute
readyList.resolveWith( document, [ jQuery ] );
}
} );
jQuery.ready.then = readyList.then;
// The ready event handler and self cleanup method
function completed() {
document.removeEventListener( "DOMContentLoaded", completed );
window.removeEventListener( "load", completed );
jQuery.ready();
}
// Catch cases where $(document).ready() is called
// after the browser event has already occurred.
// Support: IE <=9 - 10 only
// Older IE sometimes signals "interactive" too soon
if ( document.readyState === "complete" ||
( document.readyState !== "loading" && !document.documentElement.doScroll ) ) {
// Handle it asynchronously to allow scripts the opportunity to delay ready
window.setTimeout( jQuery.ready );
} else {
// Use the handy event callback
document.addEventListener( "DOMContentLoaded", completed );
// A fallback to window.onload, that will always work
window.addEventListener( "load", completed );
}
} );
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