Checking if a button exists

Question

I have a .js file that is invoked by a few .jsp pages. What I need to do in this particular .js file is to invoke a certain function only if the 'save' button is present in the .jsp page. How do I check if the button exists? Currently, in the .js file the button is referred to this way: $('button[id=save]')

How do I check if such a button exists?

you can also look into this post http://stackoverflow.com/questions/31044/is-there-an-exists-function-for-jquery — pappu_kutty, Nov 19 '13 at 07:12
possible duplicate of [Check if element exists in jQuery](http://stackoverflow.com/questions/4592493/check-if-element-exists-in-jquery) — Voonic, Nov 19 '13 at 07:14

score 19 · Answer 1 · edited Sep 24 '20 at 10:20

19

try something like this

$(document).ready(function(){
    //javascript
    if(document.getElementById('save')){
        //your code goes here
    }
    
    //jquery
    if($('#save').length){
        //your code goes here
    }
});

edited Sep 24 '20 at 10:20

Georgy

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answered Nov 19 '13 at 07:17

rajesh kakawat

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1

+1 `getElementById` is enough, you could remove the jQuery part :) – Nov 19 '13 at 07:20

score 4 · Answer 2 · answered Nov 19 '13 at 07:10

4

You can do this:

if($('#save').length > 0){
    // Button exists
} else {
    // Button is not present in the DOM yet

}

answered Nov 19 '13 at 07:10

palaѕн

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Checking if a button exists

2 Answers2