为啥不显示,字符串长度
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script>
var mystr="Hello World!";
var myl=mystr.length;
</script>
</head>
<body>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script>
var mystr="Hello World!";
var myl=mystr.length;
</script>
</head>
<body>
</body>
</html>
2017-05-31
举报