Modernizr Media query doesn’t work when resize browser
I use a Modernizr media query in JavaScript to change an element margin and add a class "small". My Modernizr media query doesn't work when I resize my browser, but when I refresh the page then it works. I know I can solve this problem using the jQuery $( window ).resize() function, but I want to solve it using a media query. Can any one tell me how I can solve this problem?
<html class="no-js">
<head>
<title>Foundation 5</title>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="modernizr.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if (Modernizr.mq('(max-width: 767px)')) {
$("#secondary").addClass("small");
$("#secondary").css("margin", " 25px");
}
});
</script>
<style type="text/css">
#primary {
width: 300px;
height: 200px;
background-color: black;
}
#secondary {
margin: 0 auto;
width: 250px;
height: 150px;
background-color: white;
position: absolute;
}
</style>
</head>
<body>
<div id="primary">
<div id="secondary">
</div>
</div>
</body>
</html>
Answer
At the moment it runs once only (on page load), so of course it only changes when you refresh the page.
Solution: You need your code to run onload and when the browser/window resizes. :
e.g.
<script type="text/javascript">
var mod = function(){
if (Modernizr.mq('(max-width: 767px)')) {
$("#secondary").addClass("small").css("margin", " 25px");
} else {
// Clear the settings etc
$("#secondary").removeClass("small").css("margin", ""); // <<< whatever the other margin value should be goes here
}
}
// Shortcut for $(document).ready()
$(function() {
// Call on every window resize
$(window).resize(mod);
// Call once on initial load
mod();
});
</script>
Option 2
A common alternative I now use is to simply trigger a window resize event at the end of the onload (e.g. after the handler is connected).
<script type="text/javascript">
// Shortcut for $(document).ready()
$(function() {
// Call on every window resize
$(window).resize(function(){
if (Modernizr.mq('(max-width: 767px)')) {
$("#secondary").addClass("small").css("margin", " 25px");
} else {
// Clear the settings etc
$("#secondary").removeClass("small").css("margin", ""); // <<< whatever the other margin value should be goes here
}
}).resize(); // Cause an initial widow.resize to occur
});
</script>
Simple JSFiddle example: http://jsfiddle.net/TrueBlueAussie/zv12z7wy/