console_time.html

<html>
	<head>
		<script type="text/javascript">
			function PerfTest(implement, params, times) {
    	  this.implement = implement;
    	  this.params = params;
    	  this.times = times || 10000;
    	  this.average = 0;    	  
    	}
    	
    	PerfTest.prototype = {
    	  run: function(){
    	  	var beginAt, endAt, sumTime = 0;
    	  	for(var i = 0, times = this.times; i < times; i++) {
    	  	  beginAt = +new Date();
    	  	  this.implement(this.params); //调用测试函数
    	  	  endAt = +new Date();
    	  	  sumTime += endAt - beginAt;
    	  	}
    	  	this.average = sumTime / this.times;
    	  	return console.log("Average executated " + this.times + " times and time is : " + this.average );
    	  }
    	}
    	
    	var list = [1,2,3,4,5,6,7,8,9,10];
    	var testFunc = function(list){
    	  var arr = [],
    	      len = list.length;
    	      
    	  for(var i = 0; i < len; i++) {
    	    arr.push(list[i]);
    	  }
    	}
    	
    	var test = new PerfTest(testFunc, list, 100000);
    	test.run();

		</script>
	</head>
	<body>
		console.time
	</body>
</html>