mirror of
https://github.com/jquery/jquery.git
synced 2024-11-23 02:54:22 +00:00
99 lines
2.4 KiB
JavaScript
99 lines
2.4 KiB
JavaScript
define( [
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"./core",
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"./core/nodeName",
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"./core/camelCase",
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"./core/toType",
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"./var/isFunction",
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"./var/isWindow",
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"./var/slice",
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"./event/alias"
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], function( jQuery, nodeName, camelCase, toType, isFunction, isWindow, slice ) {
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"use strict";
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jQuery.fn.extend( {
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bind: function( types, data, fn ) {
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return this.on( types, null, data, fn );
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},
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unbind: function( types, fn ) {
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return this.off( types, null, fn );
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},
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delegate: function( selector, types, data, fn ) {
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return this.on( types, selector, data, fn );
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},
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undelegate: function( selector, types, fn ) {
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// ( namespace ) or ( selector, types [, fn] )
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return arguments.length === 1 ?
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this.off( selector, "**" ) :
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this.off( types, selector || "**", fn );
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}
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} );
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// Bind a function to a context, optionally partially applying any
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// arguments.
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// jQuery.proxy is deprecated to promote standards (specifically Function#bind)
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// However, it is not slated for removal any time soon
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jQuery.proxy = function( fn, context ) {
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var tmp, args, proxy;
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if ( typeof context === "string" ) {
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tmp = fn[ context ];
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context = fn;
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fn = tmp;
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}
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// Quick check to determine if target is callable, in the spec
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// this throws a TypeError, but we will just return undefined.
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if ( !isFunction( fn ) ) {
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return undefined;
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}
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// Simulated bind
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args = slice.call( arguments, 2 );
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proxy = function() {
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return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
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};
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// Set the guid of unique handler to the same of original handler, so it can be removed
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proxy.guid = fn.guid = fn.guid || jQuery.guid++;
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return proxy;
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};
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jQuery.holdReady = function( hold ) {
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if ( hold ) {
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jQuery.readyWait++;
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} else {
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jQuery.ready( true );
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}
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};
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jQuery.isArray = Array.isArray;
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jQuery.parseJSON = JSON.parse;
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jQuery.nodeName = nodeName;
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jQuery.isFunction = isFunction;
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jQuery.isWindow = isWindow;
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jQuery.camelCase = camelCase;
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jQuery.type = toType;
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jQuery.now = Date.now;
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jQuery.isNumeric = function( obj ) {
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// As of jQuery 3.0, isNumeric is limited to
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// strings and numbers (primitives or objects)
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// that can be coerced to finite numbers (gh-2662)
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var type = jQuery.type( obj );
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return ( type === "number" || type === "string" ) &&
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// parseFloat NaNs numeric-cast false positives ("")
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// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
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// subtraction forces infinities to NaN
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!isNaN( obj - parseFloat( obj ) );
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};
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} );
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