Last Updated: February 25, 2016
· lukeahopkins

Useful Javascript function for Responsive Web Design

UPDATE - This is now redundant as Firefox and Chrome have built in functionality to tell you window width etc.

I spend ages when doing RWD re-sizing the browser and finding parts that need tweaking with media queries, but I never had a solid way of working out what the current width was (using Firebug Inspector took ages!)..

So I created this (obviously this requires jQuery):

$(document).keydown(function(e) {
if(e.keyCode == 45)


Press Insert whenever you need the innerWidth :)

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Good point, didn't notice because I develop in Firefox :p will edit now. Thanks for the input :)

over 1 year ago ·