大家好，又见面了，我是你们的朋友全栈君。

简单验证复选框，单选框必填

例子代码：

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>layui</title>
  <meta name="renderer" content="webkit">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
  <link rel="stylesheet" href="//res.layui.com/layui/dist/css/layui.css"  media="all">
  <!-- 注意：如果你直接复制所有代码到本地，上述css路径需要改成你本地的 -->
</head>
<body>
      

<fieldset class="layui-elem-field layui-field-title" style="margin-top: 50px;">
  <legend>初始赋值演示</legend>
</fieldset>
 
<form class="layui-form" action="" lay-filter="example">
  <div class="layui-form-item">
    <label class="layui-form-label">复选框</label>
    <div class="layui-input-block">
      <input type="checkbox" name="like" lay-skin="primary" lay-verify="otherReq" title="写作">
      <input type="checkbox" name="like" lay-skin="primary" lay-verify="otherReq" title="阅读">
      <input type="checkbox" name="like"  lay-verify="otherReq" title="游戏">
    </div>
  </div>
  <div class="layui-form-item">
    <label class="layui-form-label">单选框</label>
    <div class="layui-input-block">
      <input type="radio" name="sex" value="男" lay-verify="otherReq" title="男" >
      <input type="radio" name="sex" value="女" lay-verify="otherReq" title="女">
    </div>
  </div>
  
  <div class="layui-form-item">
    <div class="layui-input-block">
      <button class="layui-btn" lay-submit="" lay-filter="demo1">立即提交</button>
    </div>
  </div>
</form>

<script src="//res.layui.com/layui/dist/layui.js" charset="utf-8"></script>
<!-- 注意：如果你直接复制所有代码到本地，上述js路径需要改成你本地的 -->
<script>
layui.use(['form', 'layedit', 'laydate'], function(){
  var form = layui.form
  ,layer = layui.layer
  ,layedit = layui.layedit
  ,laydate = layui.laydate;
  

  //自定义验证规则
  form.verify({
    otherReq: function(value,item){
      var $ = layui.$;
      var verifyName=$(item).attr('name')
      , verifyType=$(item).attr('type')
      ,formElem=$(item).parents('.layui-form')//获取当前所在的form元素，如果存在的话
//,verifyElem=formElem.find('input[name='+verifyName+']')//获取需要校验的元素
,verifyElem=formElem.find("input[name='"+verifyName+"']")//获取需要校验的元素
,isTrue= verifyElem.is(':checked')//是否命中校验
,focusElem = verifyElem.next().find('i.layui-icon');//焦点元素
if(!isTrue || !value){
        //定位焦点
        focusElem.css(verifyType=='radio'?{"color":"#FF5722"}:{"border-color":"#FF5722"});
        //对非输入框设置焦点
        focusElem.first().attr("tabIndex","1").css("outline","0").blur(function() {
            focusElem.css(verifyType=='radio'?{"color":""}:{"border-color":""});
         }).focus();
        return '必填项不能为空';
}
    }
  });
 
  //监听提交
  form.on('submit(demo1)', function(data){
    layer.alert(JSON.stringify(data.field), {
      title: '最终的提交信息'
    })
    return false;
  });
 
});
</script>

</body>
</html>

注意：

所有单选和多选这里都是要设置成一样子:lay-verify=”otherReq”

转载：https://fly.layui.com/jie/49182/