124 lines
3.3 KiB
JavaScript
124 lines
3.3 KiB
JavaScript
// Initialize a jQuery object
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define([
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"../core",
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"./var/rsingleTag",
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"../traversing/findFilter"
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], function( jQuery, rsingleTag ) {
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// A central reference to the root jQuery(document)
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var rootjQuery,
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// A simple way to check for HTML strings
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// Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
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// Strict HTML recognition (#11290: must start with <)
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rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,
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init = jQuery.fn.init = function( selector, context ) {
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var match, elem;
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// HANDLE: $(""), $(null), $(undefined), $(false)
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if ( !selector ) {
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return this;
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}
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// Handle HTML strings
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if ( typeof selector === "string" ) {
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if ( selector[0] === "<" && selector[ selector.length - 1 ] === ">" && selector.length >= 3 ) {
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// Assume that strings that start and end with <> are HTML and skip the regex check
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match = [ null, selector, null ];
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} else {
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match = rquickExpr.exec( selector );
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}
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// Match html or make sure no context is specified for #id
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if ( match && (match[1] || !context) ) {
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// HANDLE: $(html) -> $(array)
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if ( match[1] ) {
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context = context instanceof jQuery ? context[0] : context;
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// Option to run scripts is true for back-compat
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// Intentionally let the error be thrown if parseHTML is not present
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jQuery.merge( this, jQuery.parseHTML(
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match[1],
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context && context.nodeType ? context.ownerDocument || context : document,
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true
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) );
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// HANDLE: $(html, props)
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if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
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for ( match in context ) {
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// Properties of context are called as methods if possible
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if ( jQuery.isFunction( this[ match ] ) ) {
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this[ match ]( context[ match ] );
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// ...and otherwise set as attributes
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} else {
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this.attr( match, context[ match ] );
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}
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}
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}
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return this;
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// HANDLE: $(#id)
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} else {
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elem = document.getElementById( match[2] );
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// Support: Blackberry 4.6
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// gEBID returns nodes no longer in the document (#6963)
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if ( elem && elem.parentNode ) {
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// Inject the element directly into the jQuery object
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this.length = 1;
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this[0] = elem;
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}
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this.context = document;
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this.selector = selector;
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return this;
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}
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// HANDLE: $(expr, $(...))
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} else if ( !context || context.jquery ) {
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return ( context || rootjQuery ).find( selector );
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// HANDLE: $(expr, context)
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// (which is just equivalent to: $(context).find(expr)
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} else {
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return this.constructor( context ).find( selector );
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}
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// HANDLE: $(DOMElement)
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} else if ( selector.nodeType ) {
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this.context = this[0] = selector;
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this.length = 1;
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return this;
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// HANDLE: $(function)
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// Shortcut for document ready
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} else if ( jQuery.isFunction( selector ) ) {
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return typeof rootjQuery.ready !== "undefined" ?
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rootjQuery.ready( selector ) :
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// Execute immediately if ready is not present
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selector( jQuery );
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}
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if ( selector.selector !== undefined ) {
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this.selector = selector.selector;
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this.context = selector.context;
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}
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return jQuery.makeArray( selector, this );
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};
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// Give the init function the jQuery prototype for later instantiation
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init.prototype = jQuery.fn;
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// Initialize central reference
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rootjQuery = jQuery( document );
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return init;
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});
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