javascript window.onresize on page load

Question

I have a script which shows different content depending on the screen size, it looks like this:

window.onresize = function(event) {
if ((window.innerWidth > 750 && window.innerWidth < 1250))  {

//Do something

}}

The above works absolutely fine when re-sizing the browser. My question is how can i get the above to work if the user opens the page up with a window width of say 750?

I have just tested this and obviously the event isn't triggered until the browser is re-sized, this is causing the above not to work

Answer 1

var onResizing = function(event) {
if ((window.innerWidth > 750 && window.innerWidth < 1250))  {

//Do something

}};

window.onresize = onResizing;
window.onload = onResizing;