tests[''] = function()

in static/assets/js/modernizr.js [547:558]


    tests['multiplebgs'] = function() {
        // Setting multiple images AND a color on the background shorthand property
        //  and then querying the style.background property value for the number of
        //  occurrences of "url(" is a reliable method for detecting ACTUAL support for this!

        setCss('background:url(https://),url(https://),red url(https://)');

        // If the UA supports multiple backgrounds, there should be three occurrences
        //   of the string "url(" in the return value for elemStyle.background

        return (/(url\s*\(.*?){3}/).test(mStyle.background);
    };