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javascript - How to select different option values based on the values passed from the background in html select

淡淡烟草味 2017-06-28 09:25:35

1114

Code:

 <tr>
    <th>空间性质</th>
     <td>
         <input type="hidden" id = "class" value="{$post.post_class}"/>

         <select class="form-control" name="post[post_class]" id="class2" value="{$post.post_class}">
         <option value="0" id="op1">出售</option>
         <option value="1" id="op2">出租</option>
         </select>
         </td>
 </tr>

Display different option values according to the value of value={$post.post_class}, value only has two values 0 and 1. TKS

淡淡烟草味

reply all(5)

黄舟2017-06-28 09:27:35 5 floor

The default selection is right, just use jquery's attr. Assuming that the default selection value is 1, the code is as follows:

$("#class option[value='1']").attr('selected',true);

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巴扎黑2017-06-28 09:27:35 4 floor

Isn’t it enough to just set the value in the select tag to 0 or 1?

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我想大声告诉你2017-06-28 09:27:35 3 floor

$("#class option[value='1']").attr('selected',true);
或
$("#class").val(1);

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世界只因有你2017-06-28 09:27:35 2 floor

http://jsrun.net/d9YKp

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给我你的怀抱2017-06-28 09:27:35 1 floor

Due to: document.querySelector('#class').valueThe value in select cannot be obtained (i.e. to get the value sent from the background, and then judge.

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