jQuery: Bind onClick to all anchors pointing to other pages with target=_self

Question

I want to call my custom function (or simply execute certain logic) whenever user clicks on any a that does not open in a new window and has href attribute which is not empty and does not start with # and does not have javascript:.

Basically I need all those links that, if clicked will lead to the current page be unloaded. But all other links like #point1 or javascript:alert('');, etc. should be excluded (because if clicked the user will still remain on the page). What is the proper jQuery for that?

Ideally should be compatible with older jQuery - version 1.7.2

haim770 · Accepted Answer · 2015-10-29T17:35:08.457

3

Try this:

$(document).on('click', 'a[href][href!=""]:not([href^="#"],[href^="javascript:"],[target="_blank"])', function() {
    // do something
})

But, you have to consider that it's not a very readable code to maintain. Passing a filter function (like in @Rory McCrossan answer) can be more readable.

See Fiddle

P.S Have you considered using the beforeunload event instead?

edited Oct 29 '15 at 17:35

answered Oct 29 '15 at 17:06

haim770

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+1 for using a delegated handler, with selector. FYI You should as a matter of habit use `$(document)` and not `body` for delegated handlers. `body` has a bug to do with styling. – iCollect.it Ltd Oct 29 '15 at 17:20
@TrueBlueAussie, Thanks. Updated. – haim770 Oct 29 '15 at 17:21
So I should then use [href^="#"] for does not start with condition, and also should append [href^="javascript:"]? – Fit Dev Oct 29 '15 at 17:31
@FitDev, I updated the answer with the correct handling of `#` – haim770 Oct 29 '15 at 17:32
Oh I see you just answered it with an edit. Thank you! – Fit Dev Oct 29 '15 at 17:32
Just to clarify, in your latest edit not acts as OR inside, that is it will work if ANY of the NOTed conditions is present (not all of them must be present)? – Fit Dev Oct 29 '15 at 17:35
@FitDev, It seems to act in an AND way. See the updated Fiddle – haim770 Oct 29 '15 at 17:36

Rory McCrossan · Answer 2 · 2015-10-29T17:21:23.663

2

As that's quite a complex set of rules you could use a filter():

$('a').filter(function() {
    var href = $(this).attr('href');
    return href != '' && href != '#someanchor' && this.target != '_blank';
}).click(function() {
    // do your thing here...
});

edited Oct 29 '15 at 17:21

answered Oct 29 '15 at 17:04

Rory McCrossan

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A single delegated handler, no matter how complex the jQuery selector, will always perform better than loads of individual click handlers. – iCollect.it Ltd Oct 29 '15 at 17:19
I agree, although @haim770 laid claim to that answer :) – Rory McCrossan Oct 29 '15 at 17:20
@RoryMcCrossan, +1 But, any reason you insist on `attr('href')` instead of `this.href`? – haim770 Oct 29 '15 at 17:22
@Haim770 thanks for the edit, however I specifically used the `href` via `attr()` as it gives you the attribute value from the DOM. Using `this.href` means that the URL is made absolute which can lead to differences. Example: http://jsfiddle.net/zcgrpdum/ – Rory McCrossan Oct 29 '15 at 17:22
@RoryMcCrossan, I see – haim770 Oct 29 '15 at 17:24

score 0 · Answer 3 · answered Oct 29 '15 at 17:16

0

You could use jQuery's .not() method. See: http://api.jquery.com/not/

$('a')
   .not('[target=_blank]')
   .not('[href=""]')
   .not('[href=#someanchor]')
   .on('click', function() {
      //code here
   });

answered Oct 29 '15 at 17:16

alvarodms

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jQuery: Bind onClick to all anchors pointing to other pages with target=_self

3 Answers3