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两级联动select刷新后其值保持不变的实现方法_PHP

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Release： 2016-06-01 11:56:44
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背景

还是学院和专业的关系，我需要保持点击提交按钮后，页面select中继续维持提交前的值

网上有几种办法，要么通过url跳转时候附带参数形式传回页面，或者提交时候讲select的值保存在cookie中，提交后再把cookie中的值填回select中。

我是按照保存在cookie中的方法实现刷新后select值不变，对select设置一个onchange事件
复制代码 代码如下:

Related labels：
两级联动 select刷新
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