jQuery回调问题 [英] JQuery callback question

问题描述

我正在尝试为jquery中的不同回调函数分配一个不同的数字.

I'm trying to assign a different number to different callback functions in jquery.

for (i=o;i<types.length;i++) {
     $('#ajax'+types[i]+'Div').html('Loading...').load('searchAjax.php','new=u',function () { $(this).find('select').change( function() { AjaxDiv(i); } ) } );
}

每次我运行这段代码时，对ajaxDiv的每次调用我都是5，因为它正在调用全局变量.我不确定是否可以更改i的范围，或者是否可以在change函数中打印值.有什么想法吗?

Everytime I run this section of code, i is 5 for each call to ajaxDiv because it is calling a global variable. I'm not sure if I can either change the scope of i or if there's a way to print the value in the change function. Any ideas?

先谢谢您！感恩节快乐！

Thank you in advance! Happy Thanksgiving!

安德鲁

推荐答案

所有回调函数都引用同一个i变量，并且它们在循环完成时执行.

The callback functions all refer to the same i variable, and they are executed when the loop is finished.

您必须在循环中捕获i变量:

You have to capture the i variable on the loop:

for (i=o;i<types.length;i++) {
  (function (i) {
     $('#ajax'+types[i]+'Div').html('Loading...').load('searchAjax.php','new=u',
     function () {
       $(this).find('select').change( function() { AjaxDiv(i); } )
     } );
  })(i);
}

这篇关于jQuery回调问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！