javascript序列化问题 [英] javascript serializing question

问题描述

我正在使用以下内容...

I'm using the following...

 // (jquery / pseudo code)
 var base = $('form[name="gs"]').attr('action');
 var params = $('form[name="gs"]').serialize();
 var url = base + '?' + params;

我有一个侦听器，当按下某个键时，该侦听器会调用此函数.它在搜索栏中获取查询.但是，如果在执行后在搜索框中键入more，则返回undefined的结果.我该如何解决?

I have a listener which calls this function when a key is pressed. It's grabbing a query in a search bar. However, if type more in the search box after it has already executed once it returns a result of undefined. How would I fix this?

推荐答案

在函数外部声明全局变量:

Declare global variables outside the function:

var globalBase, globalParams;

然后在初始时间缓存值并相应地更新它们:

Then cache the values the initial time and update them accordingly:

globalBase   = (globalBase === void(0)) ? 
               $('form[name="gs"]').attr('action') : 
               globalBase;
globalParams = (globalParams === void(0)) ?
               $('form[name="gs"]').serialize() : 
               globalParams;
var url      = globalBase + '?' + globalParams;

如果您需要根据按键时输入的内容来更新基本或参数，则可以将语句替换为$(yourInput).val().

If you need to update the base or params based on what is typed on key press, then you can replace the else statements with something like $(yourInput).val().

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