请老师检查

来源：4-8 编程练习

KangarooL

2021-03-27 19:12:35

相关代码：

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<script>
    //预设代码
    var a = '50px', b = 'px50', c = '050px', d = '50.12345', e = '50.123px45';

    document.write('a=' + parseFloat(a) + '<br>');
    document.write('b=' + parseFloat(b) + '<br>');
    document.write('c=' + parseFloat(c) + '<br>');
    document.write('d=' + parseFloat(d) + '<br>');
    document.write('e=' + parseFloat(e) + '<br>');
</script>
</body>
</html>