Home Web Front-end Layui Tutorial How layui verifies form tags

How layui verifies form tags

Dec 16, 2020 am 09:59 AM
layui Label form

How layui verifies form tags

本文为大家介绍layui对表单标签进行校验的方法,希望能够帮助到大家。

(学习视频分享:编程视频

layui表单元素的校验只需在元素上加入lay-verify,layui提供了以下值。

required(必填项)
phone(手机号)
email(邮箱)
url(网址)
number(数字)
date(日期)
identity(身份证)
自定义值
Copy after login

同时支持多条规则的验证,格式:lay-verify=“验证A|验证B”
如:lay-verify=“required|phone|number”

另外,除了我们内置的校验规则,你还可以给他设定任意的值,比如lay-verify=“pass”,那么你就需要借助form.verify()方法对pass进行一个校验规则的定义

示例:

<div class="layui-form-item">
        <label for="" class="layui-form-label">请输入邮件</label>
        <div class="layui-input-block">
            <input type="text" placeholder="请输入邮件" lay-verify="email" class="layui-input">
        </div>
    </div>
Copy after login

填入非法邮件时,点击提交会有笑脸图标提示,挺棒的!

How layui verifies form tags

自定义校验:

form.verify({
  username: function(value, item){ //value:表单的值、item:表单的DOM对象
    if(!new RegExp("^[a-zA-Z0-9_\u4e00-\u9fa5\\s·]+$").test(value)){
      return &#39;用户名不能有特殊字符&#39;;
    }
    if(/(^\_)|(\__)|(\_+$)/.test(value)){
      return &#39;用户名首尾不能出现下划线\&#39;_\&#39;&#39;;
    }
    if(/^\d+\d+\d$/.test(value)){
      return &#39;用户名不能全为数字&#39;;
    }
  }
  
  //我们既支持上述函数式的方式,也支持下述数组的形式
  //数组的两个值分别代表:[正则匹配、匹配不符时的提示文字]
  ,pass: [
    /^[\S]{6,12}$/
    ,&#39;密码必须6到12位,且不能出现空格&#39;
  ] 
});
Copy after login

当你自定义了类似上面的验证规则后,你只需要把key赋值给输入框的 lay-verify 属性即可:

<input type="text" lay-verify="username" placeholder="请输入用户名">
<input type="password" lay-verify="pass" placeholder="请输入密码">
Copy after login

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