html5表单验证美化综合案例
程序员文章站
2022-06-17 21:45:18
用到的事件： oninput 在值发生变化时立马触发 oninvalid 在不符合验证的时候触发 onchange 虽然触发值会发生变化，但不是立刻触发，要鼠标失去焦点时才能触发 onfocus 在获得焦点的时候触发 效果图
用到的事件：
oninput 在值发生变化时立马触发
oninvalid 在不符合验证的时候触发
onchange 虽然触发值会发生变化，但不是立刻触发，要鼠标失去焦点时才能触发
onfocus 在获得焦点的时候触发
效果图
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>form</title>
<style>
.container{margin:100px;font-size:14px;position: relative;}
.item{position: relative;width:250px;height:40px;}
input,select{width:250px;height:20px;line-height:20px;border-radius: 4px;border:1px solid #999;color:#999;margin-bottom:10px;padding:5px;position: absolute;left:66px;}
.item label{position: absolute;left:0;top:5px;}
select{height:30px;width:260px;}
input[type=submit]{height:30px;line-height:20px;position:absolute;left:0;}
input:required,select:required{background:url(img/star.jpg) 90% center no-repeat;}
input:required:valid,select:required:valid{background:url(img/right.png) 90% center no-repeat;box-shadow:0 0 5px green;border:1px solid green;}
input:focus:invalid,select:focus:invalid{background:url(img/error.png) 90% center no-repeat;box-shadow:0 0 5px red;border:1px solid red;}
</style>
</head>
<body>
<div class="container">
<form action="#">
<div class="item">
<label for="tel">手机号</label>
<input type="tel" id="tel" placeholder="请输入手机号码" required pattern="^1[0-9]{10}$" oninput="this.setcustomvalidity('')" oninvalid="this.setcustomvalidity('请输入正确手机号哈')">
</div>
<div class="item">
<label for="password">密码</label>
<input type="password" id="password" placeholder="6-20位" required pattern="^[a-za-z0-9]\w{5,19}$" oninput="this.setcustomvalidity('')" oninvalid="this.setcustomvalidity('请输入正确密码哈')" onchange="checkpwd()">
</div>
<div class="item">
<label for="repassword">确认密码</label>
<input type="password" id="repassword" placeholder="确认密码" required oninput="this.setcustomvalidity('')" oninvalid="this.setcustomvalidity('请输入正确密码哈')" onchange="checkpwd()">
</div>
<div class="item">
<label for="choose">了解方式</label>
<select name="choose" id="choose" required>
<option value="">--请选择--</option>
<option value="">选项一</option>
<option value="">选项二</option>
<option value="">选项三</option>
</select>
</div>
<input type="submit" value="提交">
</form>
</div>
<script>
function checkpwd(){
if(password.value != repassword.value){
repassword.setcustomvalidity("两次密码输入不一致哎");
}else{
repassword.setcustomvalidity("");
}
}
</script>
</body>
</html>