How to solve the option overlay problem of lselect

This time I will show you how to solve the option overlay problem of lselect. What are the precautions to solve the option overlay problem of lselect. The following is a practical case, let's take a look at it together.

The editor is using layui, and I encountered a pitfall in the select area. The value in the select cannot be cleared, and the options in the select have a superposition problem. In order to solve this problem and achieve my function, I After some research, so that friends who have the same needs will not step into the trap, I have posted my source code:

nbsp;html>


 <meta>
 <title>layui-下拉框联动测试</title>
 <link>


<p>
 </p><p>
 </p><p>
 <label>选择框</label>
 </p><p>
  <select>
  <option>时间</option>
  <option>金额</option>
  </select>
 </p>
 
 <p>
 <label>选择框</label>
 </p><p>
  <select>
  <option>请选择规则名称</option>
  </select>
 </p>
 
 
<button>确定</button>

<script></script>
<script></script>
<script>
//后台传过来的数据
var data=[
 {unitType:0,ruleName:&#39;时间规则11&#39;,amount:1100,money:1100},
 {unitType:0,ruleName:&#39;时间规则12&#39;,amount:1200,money:1200},
 {unitType:0,ruleName:&#39;时间规则13&#39;,amount:1300,money:1300},
 {unitType:1,ruleName:&#39;金额规则21&#39;,amount:2100,money:2100},
 {unitType:1,ruleName:&#39;金额规则22&#39;,amount:2200,money:2200},
 {unitType:1,ruleName:&#39;金额规则23&#39;,amount:2300,money:2300},
];
//初始化默认为时间类型以及对应的时间规则
layui.use(&#39;form&#39;, function(){
 var form = layui.form;
  $(&#39;#test2&#39;).html(&#39;&#39;);
  var html=&#39;&#39;;
  $.each(data,function(i,e){
   if(e.unitType==0)
    html+=`<option data-type="${e.unitType}">${e.ruleName}`;
  })
  $(&#39;#test2&#39;).append(html);
  form.render(&#39;select&#39;); 
})
//动态二级联动
layui.use(&#39;form&#39;, function(){
 var form = layui.form;
  form.on(&#39;select(test1)&#39;, function(obj){
  $(&#39;#test2&#39;).html(&#39;&#39;);
  var html=&#39;&#39;;
  if(obj.value==0){
   $.each(data,function(i,e){
    if(e.unitType==obj.value)
     html+=`<option data-type="${e.unitType}">${e.ruleName}`;
   })
   $(&#39;#test2&#39;).append(html);
  }else if(obj.value==1){
   $.each(data,function(i,e){
    if(e.unitType==obj.value)
    html+=`<option data-type="${e.unitType}">${e.ruleName}`;
   })
   $(&#39;#test2&#39;).append(html);
  }
  form.render(&#39;select&#39;);
 });
})
//二级联动完毕后获取对应的规则数据
$(&#39;#btn&#39;).click(function(){
 var thisValue=data.find((v)=>v.ruleName==$(&#39;#test2&#39;).val());
 console.log(thisValue); 
})
</script>

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related matters on the PHP Chinese website article!

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The above is the detailed content of How to solve the option overlay problem of lselect. For more information, please follow other related articles on the PHP Chinese website!