摘要：
slice=Array.prototype。slice，//将函数绑定到上下文，可选地部分应用任何//参数。proxy:function（fn，context）｛if（typeoftext==“string”）｛vartmp=fn[context]；context=fn；fn=tmp；｝//Quickche
slice = Array.prototype.slice,
// Bind a function to a context, optionally partially applying any // arguments. proxy: function( fn, context ) { if ( typeof context === "string" ) { var tmp = fn[ context ]; context = fn; fn = tmp; } // Quick check to determine if target is callable, in the spec // this throws a TypeError, but we will just return undefined. if ( !jQuery.isFunction( fn ) ) { return undefined; } // Simulated bind var args = slice.call( arguments, 2 ), proxy = function() { return fn.apply( context, args.concat( slice.call( arguments ) ) ); }; // Set the guid of unique handler to the same of original handler, so it can be removed proxy.guid = fn.guid = fn.guid || proxy.guid || jQuery.guid++; return proxy; },