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  • layui之select的option叠加问题解决

    小编我在使用layui,在select的地方遇到了坑,select里的值居然无法清空,select里的option还有叠加问题,为了解决这个问题,也达到我的功能,我研究了下,让有同样需求的小伙伴不踩坑,特贴上我的源码:

     1 <!DOCTYPE html>
     2 <html lang="en">
     3 <head>
     4     <meta charset="UTF-8">
     5     <title>layui-下拉框联动测试</title>
     6     <link rel="stylesheet" href="layui/css/layui.css">
     7 </head>
     8 <body>
     9 <div id="wrap">
    10  <div class="layui-form" lay-filter="merchantForm">
    11   <div class="layui-form-item">
    12     <label class="layui-form-label">选择框</label>
    13     <div class="layui-input-block">
    14       <select name="city" lay-verify="required" id="test1"  lay-filter="test1">
    15         <option value="0">时间</option>
    16         <option value="1">金额</option>
    17       </select>
    18     </div>
    19   </div>
    20   <div class="layui-form-item">
    21     <label class="layui-form-label">选择框</label>
    22     <div class="layui-input-block">
    23       <select name="city" lay-verify="required" id="test2"  lay-filter="test2">
    24         <option value="">请选择规则名称</option>
    25       </select>
    26     </div>
    27   </div>
    28 </div>    
    29 
    30 <button id="btn">确定</button>
    31 </body>
    32 <script src="layui/layui.all.js"></script>
    33 <script src="layui/jquery-1.8.3.min.js"></script>
    34 <script>
    35 //后台传过来的数据
    36 var data=[
    37  {unitType:0,ruleName:'时间规则11',amount:1100,money:1100},
    38  {unitType:0,ruleName:'时间规则12',amount:1200,money:1200},
    39  {unitType:0,ruleName:'时间规则13',amount:1300,money:1300},
    40  {unitType:1,ruleName:'金额规则21',amount:2100,money:2100},
    41  {unitType:1,ruleName:'金额规则22',amount:2200,money:2200},
    42  {unitType:1,ruleName:'金额规则23',amount:2300,money:2300},
    43 ];
    44 //初始化默认为时间类型以及对应的时间规则
    45 layui.use('form', function(){
    46   var form = layui.form;
    47         $('#test2').html('');
    48         var html='';
    49         $.each(data,function(i,e){
    50             if(e.unitType==0)
    51              html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
    52         })
    53         $('#test2').append(html);
    54         form.render('select');    
    55 })
    56 //动态二级联动
    57 layui.use('form', function(){
    58   var form = layui.form;
    59       form.on('select(test1)', function(obj){
    60         $('#test2').html('');
    61         var html='';
    62         if(obj.value==0){
    63             $.each(data,function(i,e){
    64                 if(e.unitType==obj.value)
    65                  html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
    66             })
    67             $('#test2').append(html);
    68         }else if(obj.value==1){
    69             $.each(data,function(i,e){
    70                 if(e.unitType==obj.value)
    71                 html+=`<option data-type="${e.unitType}">${e.ruleName}</option>`;
    72             })
    73             $('#test2').append(html);
    74         }
    75         form.render('select');
    76     });
    77 })
    78 //二级联动完毕后获取对应的规则数据
    79 $('#btn').click(function(){
    80     var thisValue=data.find((v)=>v.ruleName==$('#test2').val());
    81     console.log(thisValue);    
    82 })
    83 </script>
    84 </html>

    一定不要设置value值一样,不然相同的value都给你加上lay-this

    有疑问的小伙伴可以留言给我,谢谢。

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  • 原文地址:https://www.cnblogs.com/studyshufei/p/8076464.html
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