How to set `onSubmit` dynamically with JavaScript

javascript submit form-submit onsubmit
pattyd picture pattyd · Jun 15, 2013 · Viewed 8.1k times · Source

Right now I am in a bit of a dilemma because I cannot edit the onSubmit of my form, so I will have to set it dynamically. My problem is, I have no idea how to do this without overwriting the value that is already in the onSubmit
For example, lets say I have this code:

<form name="bob" onSubmit="something-i-cannot-change">

</form>

How would I set another function to happen onSubmit along with the other function that is already in there? I looked this up and had no luck... Thanks, I really appreciate any help!!!

Note: If this question is a duplicate of anything, then please let me know!

Answer

Felipe picture Felipe · Aug 8, 2015 
document.getElementById("<element-id>").setAttribute("onSubmit", "<action>");

Related questions

javascript Submit multiple forms with one button

In my html I have multiple forms (text inputs, radio buttons, check boxes and select) and one button. I would like to fill all these forms and send values to my php file. For now I am trying to submit …

Read More
jQuery AJAX submit form

I have a form with name orderproductForm and an undefined number of inputs. I want to do some kind of jQuery.get or ajax or anything like that that would call a page through Ajax, and send along all the …

Read More
JavaScript post request like a form submit

I'm trying to direct a browser to a different page. If I wanted a GET request, I might say document.location.href = 'http://example.com/q=a'; But the resource I'm trying to access won't respond properly unless I use …

Read More