user3438917 user3438917 - 5 months ago 8x
Javascript Question

How to toggle div from display none to visible

I have a sub-navigation (

) that currently loads hidden and should only display visible when triggered on mobile/tablet devices. I have set the div with
, but then can't toggle it to visible or
when on mobile/tablet devices. I have also set the div to load hidden with jQuery, but again can't get the div to toggle visible on mobile/tablet devices.

if($(window).width() == '768'){

$(".hamburger").on('click', function(){

Lou Lou

I see that you use == in your test, did you try to put <= instead. Then you indicate 768 as a string and not a number, try to change that. Also if you test your website on the desktop browser, maybe you could try to put code into a .resize(), like so :

<!doctype html>
      .nav-sub-wrapper {
        height: 100px;
        width: 100px;
        background-color: blue;

      .hamburger {
        position: absolute;
        top: 0;
        right: 0;
        width: 25px;
        height: 25px;
        background-color: red;
    <div class="nav-sub-wrapper"></div>
    <div class="hamburger"></div>

    <script src=""></script>

      function navHidden() {
        if($(window).width() <= 768){
        $(".hamburger").on('click', function(){

      $( window ).resize(function() {

      $( document ).ready(function(){


I also added an else condition so the .nav-sub-wrapper displays back over 768px wide. You can try this in your navigator and tell me if it matches what you expected ;-)