我正在根據Google的PageSpeed洞察優化我的網站。它建議我「移除阻止呈現的JavaScript」爲多個文件(名稱簡化例如的緣故):谷歌PageSpeed洞察與多個JavaScript文件
<script src="js/1.js" type="text/javascript"></script>
<script src="js/2.js" type="text/javascript"></script>
<script src="js/3.js" type="text/javascript"></script>
我想Patrick Sexton's "Defer Loading Javascript" approach僅推遲一個文件(defer.js
):
<script type="text/javascript">
function downloadJSAtOnload() {
var element = document.createElement("script");
element.src = "defer.js";
document.body.appendChild(element);
}
if (window.addEventListener)
window.addEventListener("load", downloadJSAtOnload, false);
else if (window.attachEvent)
window.attachEvent("onload", downloadJSAtOnload);
else window.onload = downloadJSAtOnload;
</script>
我的問題是,這種方法如何修改以包含多個文件(即1.js
,2.js
,3.js
)?