Solved

How do I intercept all page postbacks in jquery before they occur?

Posted on 2014-12-04
3
185 Views
Last Modified: 2014-12-08
Hi:

I've got of client side processing on a web page which needs to be completed before the page posts back to the server.
There are several operations on the page which could result in a postback, so I would like to universally intercept the postback on the client side before it occurs, complete some processing and proceed with the postback.

What is the best way to do this in jquery?

Thanks,
JohnB
0
Comment
Question by:jxbma
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
3 Comments
 
LVL 82

Accepted Solution

by:
leakim971 earned 500 total points
ID: 40481927
var notDone = true;
jQuery(function($) {
   $("form").submit(function(evt) {
       if(notDone) {
           evt.preventDefault();
           // do what you need here SYNCHRONOUSLY, I mean no timer, no Ajax call
           // do what you need here SYNCHRONOUSLY, I mean no timer, no Ajax call
           // do what you need here SYNCHRONOUSLY, I mean no timer, no Ajax call
           // do what you need here SYNCHRONOUSLY, I mean no timer, no Ajax call
           notDone = false;
           $(this).submit();
       }
   });
});

Open in new window

0
 
LVL 10

Expert Comment

by:Hans Langer
ID: 40482875
if you are using $.ajax({..}) you can set the properties off all the calls that you will use with "$.ajax" function.

I.E.:
$.ajax({beforeSend:function(jqXHR,settings){
//DO SOMETHING BEFORE SEND THE DATA TO THE SERVER
}})

Open in new window

if its only a page that have forms then you can just set the "submit" event of the forms.
$('form').submit(function(){
//your process
//return false to cancel the submit
//return true to proceed with the submit
})

Open in new window

0
 
LVL 1

Author Closing Comment

by:jxbma
ID: 40487251
Ultimately, this was the solution I chose to go with.

Thx
0

Featured Post

Is Your DevOps Pipeline Leaking?

Is your CI/CD pipeline a hodge-podge of randomly connected tools? You’ve likely got a tool to fix one problem & then a different tool to fix another, resulting in a cluster of tools with overlapping functionality. Learn how to optimize your pipeline with Gartner's recommendations

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When it comes to write a Context Sensitive Help (an online help that is obtained from a specific point in state of software to provide help with that state) ,  first we need to make the file that contains all topics, which are given exclusive IDs. …
Not sure what the best email signature size is? Are you worried about email signature image size? Follow this best practice guide.
In this tutorial viewers will learn how add a scalable full-width header using CSS3. Create a new HTML document with an internal stylesheet. Set a tiled background.:  Create a new div and name it Header. Position it with position:absolute at the top…
In this tutorial viewers will learn how to embed an audio file in a webpage using HTML5. Ensure your DOCTYPE declaration is set to HTML5: : The declaration should display (CODE) HTML5 is supported by the most recent versions of all major browsers…

752 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question