设置选择框的选定选项

本文介绍了设置选择框的选定选项的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想设置之前选择的选项以在页面加载时显示。我尝试了下面的代码：

I want to set a option that was selected previously to be displayed on page load. I tried it with the following code:

$("#gate").val('Gateway 2');

with

with

<select id="gate"> <option value='null'>- choose -</option> <option value='Gateway 1'>Gateway 1</option> <option value='Gateway 2'>Gateway 2</option> </select>

但这不起作用。任何想法？

But this does not work. Any ideas?

推荐答案

这绝对应该有效。 下面是演示。确保已将代码放入 $（document）.ready 中：

This definitely should work. Here's a demo. Make sure you have placed your code into a $(document).ready:

$(function() { $("#gate").val('Gateway 2'); });