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

Answer 1

You have it nearly correct. Just use

aa[i].checked = "checked";

inside the loop.

Namely, you need to make sure that:

1. "checked" is a string, not a variable identifier, and
2. you index directly on aa, not aa.elements, which does not exist