JavaScript - How to take variable that defined inside onload function outside?

Question

I want to get all input element in html page. I\'ve tried this:

window.onload = function(){
    input = document.querySelectorAll(\"input\");
}

Answer 1

Reference your script tags at the bottom of the HTML page and not in the head. This will remove any ambiguity as to whether the page has been loaded.

window.onload = function(){
    input = document.querySelectorAll("input");
    alert(input.length);
}

Now you should be able to extract the code from "window.load()" and get the expected results.

input = document.querySelectorAll("input");
alert(input.length);