Home Web Front-end JS Tutorial Realize the linkage effect between input box and drop-down box

Realize the linkage effect between input box and drop-down box

Mar 15, 2018 am 09:55 AM
drop down Effect Linkage

This time I will bring you the linkage effect between the input box and the drop-down box, and what are the precautions to achieve the linkage effect between the input box and the drop-down box. The following is a practical case, let's take a look.

As shown in the picture:

##html code

<tr>
 <th scope="row">奖励类型:</th>
 <td><input value="" type="text" name="item" id="reward" style="width: 60px;height: 20px;" placeholder="输入关键字" />
  <select name="reward_id" id="reward_id"> 
   <option value="">---请选择---</option>
   {foreach $reward as $value}
   <option value="{$value[&#39;material_id&#39;]}">{$value['material_name']}</option>
   {/foreach}
  </select>
 </td>
</tr>
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JQuery Code

<script type="text/javascript">
 $('#reward').bind('input propertychange', function() {reward();});
 function reward()
 {
  var search = $("#reward").val();
  $.ajax({ 
   type:"get", 
   url:"/mall/config_commodity_info/search_commodity_info", 
   data:{search:search}, 
   success:function(select){ 
     var reward_id = $("#reward_id"); 
     if (select) {
     $("option",reward_id).remove();
     var obj = JSON.parse(select);
     for (var key in obj) {
      var option = "<option value=&#39;"+key+"&#39;>"+obj[key]+"</option>"; 
      reward_id.append(option); 
     }
     } 
   } 
 });
 } 
</script>
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PHP Code

public function add_alms()
{
 $reward = $this->materials->selReward();
 $this->assign('reward',$reward);
 return $this->fetch();
}
public function do_add_alms()
{
 $data = Request::instance()->param();
 $this->alms->addAlms($data);
}
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I believe you have mastered the method after reading the case in this article, more Please pay attention to other related articles on the php Chinese website!

Recommended reading:

How to achieve dynamic acquisition of Jquery drop-down box data


Ajax and Jquery are combined with the database to implement it Secondary linkage of drop-down box


jQuery implements recursive infinite layer function


jquery obtains the value and text of the select tag

The above is the detailed content of Realize the linkage effect between input box and drop-down box. For more information, please follow other related articles on the PHP Chinese website!

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