diguiqiuhe.html

<!DOCTYPE html>
<head>
	<meta charset="utf-8">
	<title>递归求和</title>
	<script type="text/javascript">
	document.addEventListener("DOMContentLoaded",function(){
		console.log("计算开始");

		function calcTotalNumUsed(num){
			//var resultArr = new Array(10);
			var resultArr = [0,0,0,0,0,0,0,0,0,0];
			var temArr = [];
			//resultArr = resultArr.map(function(val,ind,arr){
			//	return arr[ind] = 0;
			//});
			for(var i = 1;i <= num;i++){
				temArr = (i + '').split('');
				for(var j = 0;j < temArr.length;j++){
					var tem = Number(temArr[j]);
					resultArr[tem]++;
				}
			}
			return resultArr;
		}
		
		var arr1 = [];
		var timeBegin = new Date().getTime();
		arr1 = calcTotalNumUsed(123);
		var timeEnd1 = new Date().getTime() - timeBegin;
		console.log("计算页码的时间是" + timeEnd1 +"毫秒");

		console.log(arr1);
	});
	</script>
</head>
<body>

</body>
</html>