jquery自动完成请求限制

下面是我为限制请求编写的代码。

初始化:

var global = {};
global.searchThrottle = Object.create(requestThrottle);

用途:

this.searchThrottle.add(function(){
         //Do some search or whatever you want to throttle 
 });

源代码:

// runs only the most recent function added in the last 400 milliseconds, others are 
// discarded
var requestThrottle = {};

// Data
requestThrottle.delay = 400; // delay in miliseconds

requestThrottle.add = function(newRequest){
 this.nextRequest = newRequest;
 if( !this.pending ){
  this.pending = true;
  var that = this;
  setTimeout( function(){that.doRequest();}, this.delay);
 }
}

requestThrottle.doRequest = function(){
 var toDoRequest = this.nextRequest;
 this.nextRequest = null;
 this.pending = false;
 toDoRequest();
}

object.create()源代码 (摘自“javascript:好的部分”):

if( typeof Object.create !== 'function'){
 Object.create = function(o){
  var F = function(){};
  F.prototype = o;
  return new F();
 };
}