JSFiddle - React, Tailwind, and code Playground

by glsee

HTML

<script src="http://modernizr.com/downloads/modernizr-2.5.3.js"></script>

JavaScript

Modernizr.addTest('cssvhunit', function() {
    var bool;
    Modernizr.testStyles("#modernizr { height: 50vh; }", function(elem, rule) {   
        var height = parseInt(window.innerHeight/2,10),
            compStyle = parseInt((window.getComputedStyle ?
                      getComputedStyle(elem, null) :
                      elem.currentStyle)["height"],10);
        
        bool= !!(compStyle == height);
    });
    return bool;
});
console.log(Modernizr.cssvhunit);