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

Try this :)

(function () {
    var checkboxes = document.querySelectorAll('input[type=checkbox]');

    //convert nodelist to array
    checkboxes = Array.prototype.slice.call(checkboxes);
    checkboxes.forEach(function (checkbox) {
        console.log(checkbox);
        checkbox.setAttribute('checked', true);
    });

})()

http://jsfiddle.net/YxUHw/