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 ,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：
layui 单选框、多选框radio 元素判断是必填项 lay-verify='required'
原文：https://www.cnblogs.com/bluealine/p/11596505.html