javascript查看页面引用什么CSS文件

        var cssStyle = document.styleSheets;         for (var i = 0; i < cssStyle.length; i++) {             if (cssStyle[i].href != null) {                 var csshref = cssStyle[i].href;                 if (csshref.indexOf("blue") > 0) {                     tmpcssColor = "#F5FAFF";                     break;                 }                 else if (csshref.indexOf("default") > 0) {                     tmpcssColor = "#FFF8E8";                     break;                 }                 else if (csshref.indexOf("green") > 0) {                     tmpcssColor = "#F4FAF0";                     break;                 }             }         }