字符串方法

biggrand

于 2017-11-05 18:41:35 发布

阅读量120

点赞数

本文链接：https://blog.youkuaiyun.com/biggrand/article/details/78451140

版权

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title></title>
    <script>
        function aa(){
            //先得到输入框的值
            var unum = document.getElementById("num").value;
            document.getElementById("box").innerText = unum;//把输入框的值传到div里
        }
    </script>
    <style type="text/css">
        div{
            width: 300px;
            height: 300px;
            background-color: yellow;
        }
    </style>
</head>
<body>
    <form>
        <input type="text" id="num"  placeholder="输入值"/>
        <input type="button" onclick="aa()" />
    </form>
    <div id="box"></div>
</body>