Check all Checkboxes in Page via Developer Tools

Question

I have a loop that creates 20 check-boxes in the same page (it creates different forms). I want via chrome developer tools to run a JavaScript without the use of any library that CHECK all check-boxes at the same time.

This is as far as I got:

function() {     var aa= document.getElementsByTagName("input");     for (var i =0; i < aa.length; i++){      aa.elements[i].checked = checked;     } } 

PS: I have searched and found a lot of Questions in Stack-Overflow but none worked for me, I'll be glad if someone could find me the correct answer.

Answer 1

(function() {     var aa= document.getElementsByTagName("input");     for (var i =0; i < aa.length; i++){         if (aa[i].type == 'checkbox')             aa[i].checked = true;     } })() 

With up to date browsers can use document.querySelectorAll

(function() {     var aa = document.querySelectorAll("input[type=checkbox]");     for (var i = 0; i < aa.length; i++){         aa[i].checked = true;     } })()