前端JS补0法

2024-06-14 61 阅读1分钟

QQ截图20240614135258.png

QQ截图20240614135307.png

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>补0操作</title>
</head>
<body>

</body>
<script>
let num = prompt('输入数字')

num = num<=10?0+num:num

document.write(num)
</script>
</html>