<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>表单验证</title>
<style>
.title{
font-weight: bold;
font-size:18px;
}
.names{
width:358px;
height:42px;
margin-left:38px;
-webkit-border-radius:5px;
-moz-border-radius:5px;
border-radius:5px;
}
.btn{
width:78px;
height:42px;
margin-left:15px;
background: rgb(46,122,184);
color: #fff;
font-size:18px;
font-weight: bold;
outline: none;
border:0;
border-radius: 5px;
}
.prompt{
margin-left:78px;
font-size:16px;
color: #ccc;
}
</style>
</head>
<body>
<form action="#">
<p>
<label for="names" class="title">名称</label>
<input type="text" class="names" id="names" name="user_name">
<button type="submit" class="btn">验证</button>
</p>
<p class="prompt">必填,长度为4~16个字符</p>
</form>
</body>
<script>
var names=document.getElementById("names");
</script>
</html>
4 回答
已采纳
Samaritan
TA贡献61条经验 获得超38个赞
var names = document.getElementById("names");
var namesValue = names.value;
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