martingraham / svgexport Goto Github PK

// see if id or element class are referenced in any styles collected below the svg node
// if not, null the id / class as they're not going to be relevant
elemArr.forEach (function (elemData) {
    var presences = {id: false, class: false};
if(typeof(elemData.class) == "string") {
        var classes = elemData.class.split(" ").filter(function(a) { return a.length > 0; });   // v1.13: may be multiple classes in a containing class attribute
        styles.forEach (function (style) {
            for (var c = 0; c < classes.length; c++) {
                if (style.indexOf ("."+classes[c]) >= 0) {
                    presences.class = true;
                    break;  // no need to keep looking through rest of classtypes if one is needed
                }
            }
            if (elemData.id && style.indexOf ("#"+elemData.id) >= 0) {
                presences.id = true;
    	    }
        });
};
    Object.keys(presences).forEach (function (presence) {
        if (!presences[presence]) { elemData[presence] = undefined; }
    });
});

return elemArr;