<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>Document</title>
</head>
<body>
	<script type="text/javascript">
		var a=prompt("请输入要几次彩票");
		var b=Number(a);
		var arr=[];
		
		var x;
		var suma=0;
		var sum=0;
		for(var i=0;i<b;i++)
		{
			arr[i]=Number(prompt("哈哈哈"));

		}
		for(var j=0;j<arr.length;j++)
		{
			 x=arr[j].toString().split("");
			 for(var k=0;k<x.length;k++)
			 {
			 	if(k<3)
			 	{
			 		sum+=Number(x[k]);
			 	}
			 	else
			 	{
			 		suma+=Number(x[k]);
			 	}
			 }
			 if(sum===suma)
			 {
			 	console.log("You are lucky!");
			 }
			 else
			 {
			 	console.log("Wish you good luck.");
			 }
		}

		//先是用数组存储起来下标0:123456，下标1120300.
		//然后是通过先将下标0解析成字符串，然后再转化为字符串数组，然后是比较前三个与后三个相等输出结果出来.
	</script>
</body>
</html>

js算法之幸运彩票_字符串