<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>
</title>
<script type="text/javascript">
var a = '未命名方案';
var za = encodeURI(a);
console.log(za);
var za2 = decodeURI(za);
console.log(za2);
var s = "0123456789";
var sf = s.length >6 ? s.substring(0,6):s;
console.log(sf);
</script>
</head>
<body>
</body>
</html>