Clicking submit button of an HTML form by a Javascript code

Question

I don t know much about WEB probramming  so feel free to ask if I m missing any details   There is a certain website which I m visiting very frequently  and it requires users to log in every time they visit  For the login page of this website  I m trying to write down a userscript which will automatically log me in   I managed to fill in the form fields  but don t have any idea how to click the submit button by JavaScript  The below is a condensed version of the original login code  How can I automatically click this submit button in this code    lt div id  start  gt       lt div id  header  gt           lt div id  login  gt               lt form id  loginForm  name  loginForm  method  post  action     gt                                          lt input type  submit  id  loginSubmit  onclick  changeAction  submitInput   loginForm   document forms  loginForm   submit     value  Log in    gt                                      lt  form gt           lt  div gt       lt  div gt   lt  div gt

User · Accepted Answer

document getElementById  loginSubmit   submit      or  use the same code as the onclick handler   changeAction  submitInput   loginForm    document forms  loginForm   submit       Though that onclick handler is kind of stupidly-written  document forms  loginForm   could be replaced with this

User · Answer

The usual way to submit a form in general is to call submit   on the form itself  as described in krtek s answer   However  if you need to actually click a submit button for some reason  your code depends on the submit button s name value being posted or something   you can click on the submit button itself like this   document getElementById  loginSubmit   click

User · Answer

You can do    document forms  loginForm   submit     But this won t call the onclick action of your button  so you will need to call it by hand   Be aware that you must use the name of your form and not the id to access it

[javascript] Clicking submit button of an HTML form by a Javascript code

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