未捕获的TypeError：无法读取null的属性“样式”？

Question

I am struggling to figure out what is creating this error

My code is simple:

HTML:

<div id="bg">nsnsn</div>

Javascript:

function rSizer(){
    var bg = document.getElementById('bg');
    alert(bg.innerHTML); //error occurs on this line
}
document.ready(rSizer());
window.on('resize', rSizer());

Answer 1

I think instead of document.ready(rSizer()); you meant document.ready(rSizer); .

Answer 2

fiddle: http://jsfiddle.net/ad119d6h/2/

HTML

<div id="bg">nsnsn</div>

JS

function rSizer(){
    var bg = document.getElementById('bg');
    console.log(bg.innerHTML); //error occurs on this line
}
$(document).ready(rSizer);
$(window).on('resize',rSizer);

Works fine for me (told ya to change that document and window ;)

also, what Chris said..

---

UPDATE (pure JS no jquery)

fiddle: http://jsfiddle.net/ad119d6h/5/

window.onload = rSizer;
window.onresize = rSizer;

(the rest is the same)