tests[''] = function()

in static/assets/js/modernizr.js [592:603]


    tests['opacity'] = function() {
        // Browsers that actually have CSS Opacity implemented have done so
        //  according to spec, which means their return values are within the
        //  range of [0.0,1.0] - including the leading zero.

        setCssAll('opacity:.55');

        // The non-literal . in this regex is intentional:
        //   German Chrome returns this value as 0,55
        // github.com/Modernizr/Modernizr/issues/#issue/59/comment/516632
        return (/^0.55$/).test(mStyle.opacity);
    };