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Ajax jquery success

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[前端(javascript) 所属分类 前端(javascript) | 发布者 店小二04 | 时间 2018 | 作者 红领巾 ] 0人收藏点击收藏

I have this ajax call to a doop.php .

function doop(){ var old = $(this).siblings('.old').html(); var new = $(this).siblings('.new').val(); $.ajax({ url: 'doop.php', type: 'POST', data: 'before=' + old + '&after=' + new, success: function(resp) { if(resp == 1) { $(this).siblings('.old').html(new); } } }); return false; }

My problem is that the $(this).siblings('.old').html(new); line isn't doing what it's supposed to do.

thanks.. all helpful comments/answers are voted up.

Update:it appears that half of the problem was the scope (thanks for the answers that helped me clarify that), but the other half is that I'm trying to use ajax in a synchronous manner. I've created a new post

First of all new is a reserved word . You need to rename that variable.

To answer your question, Yes, you need to save this in a variable outside the success callback, and reference it inside your success handler code:

var that = this; $.ajax({ // ... success: function(resp) { if(resp == 1) { $(that).siblings('.old').html($new); } } })

This is called a closure .

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