scratch – Rev 125

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// Initialize a jQuery object
define([
        "../core",
        "./var/rsingleTag",
        "../traversing/findFilter"
], function( jQuery, rsingleTag ) {

// A central reference to the root jQuery(document)
var rootjQuery,

        // A simple way to check for HTML strings
        // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
        // Strict HTML recognition (#11290: must start with <)
        rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/,

        init = jQuery.fn.init = function( selector, context ) {
                var match, elem;

                // HANDLE: $(""), $(null), $(undefined), $(false)
                if ( !selector ) {
                        return this;
                }

                // Handle HTML strings
                if ( typeof selector === "string" ) {
                        if ( selector[0] === "<" && selector[ selector.length - 1 ] === ">" && selector.length >= 3 ) {
                                // Assume that strings that start and end with <> are HTML and skip the regex check
                                match = [ null, selector, null ];

                        } else {
                                match = rquickExpr.exec( selector );
                        }

                        // Match html or make sure no context is specified for #id
                        if ( match && (match[1] || !context) ) {

                                // HANDLE: $(html) -> $(array)
                                if ( match[1] ) {
                                        context = context instanceof jQuery ? context[0] : context;

                                        // Option to run scripts is true for back-compat
                                        // Intentionally let the error be thrown if parseHTML is not present
                                        jQuery.merge( this, jQuery.parseHTML(
                                                match[1],
                                                context && context.nodeType ? context.ownerDocument || context : document,
                                                true
                                        ) );

                                        // HANDLE: $(html, props)
                                        if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) {
                                                for ( match in context ) {
                                                        // Properties of context are called as methods if possible
                                                        if ( jQuery.isFunction( this[ match ] ) ) {
                                                                this[ match ]( context[ match ] );

                                                        // ...and otherwise set as attributes
                                                        } else {
                                                                this.attr( match, context[ match ] );
                                                        }
                                                }
                                        }

                                        return this;

                                // HANDLE: $(#id)
                                } else {
                                        elem = document.getElementById( match[2] );

                                        // Support: Blackberry 4.6
                                        // gEBID returns nodes no longer in the document (#6963)
                                        if ( elem && elem.parentNode ) {
                                                // Inject the element directly into the jQuery object
                                                this.length = 1;
                                                this[0] = elem;
                                        }

                                        this.context = document;
                                        this.selector = selector;
                                        return this;
                                }

                        // HANDLE: $(expr, $(...))
                        } else if ( !context || context.jquery ) {
                                return ( context || rootjQuery ).find( selector );

                        // HANDLE: $(expr, context)
                        // (which is just equivalent to: $(context).find(expr)
                        } else {
                                return this.constructor( context ).find( selector );
                        }

                // HANDLE: $(DOMElement)
                } else if ( selector.nodeType ) {
                        this.context = this[0] = selector;
                        this.length = 1;
                        return this;

                // HANDLE: $(function)
                // Shortcut for document ready
                } else if ( jQuery.isFunction( selector ) ) {
                        return typeof rootjQuery.ready !== "undefined" ?
                                rootjQuery.ready( selector ) :
                                // Execute immediately if ready is not present
                                selector( jQuery );
                }

                if ( selector.selector !== undefined ) {
                        this.selector = selector.selector;
                        this.context = selector.context;
                }

                return jQuery.makeArray( selector, this );
        };

// Give the init function the jQuery prototype for later instantiation
init.prototype = jQuery.fn;

// Initialize central reference
rootjQuery = jQuery( document );

return init;

});