我正在尝试用以下代码动态加载脚本:
var headID = document.getElementsByTagName("head")[0];
var script = document.createElement('script');
script.type='text/javascript';
script.src="js/ordini/ImmOrd.js";
script.setAttribute("onload", "crtGridRicProd();");
headID.appendChild(script);
当页面启动时,我需要启动crtGridRicPrdo((函数,在FireFox中一切都很好,但在Internet Explorer中我遇到了问题!
Internet explorer不支持脚本标记上的"onload",而是提供"onreadystatechange"(类似于xhr对象(。您可以通过以下方式检查其状态:
script.onreadystatechange = function () {
if (this.readyState == 'complete' || this.readyState == 'loaded') {
crtGridRicProd();
}
};
否则,您可以在js文件的末尾调用crtGridRicProd((
编辑
示例:
test.js:
function test() {
alert("hello world");
};
index.html:
<!DOCTYPE html>
<html>
<head>
<title>test</title>
</head>
<body>
<script>
var head = document.getElementsByTagName("head")[0] || document.body;
var script = document.createElement("script");
script.src = "test.js";
script.onreadystatechange = function () {
if (this.readyState == 'complete' || this.readyState == 'loaded') {
test();
}
};
script.onload = function() {
test();
};
head.appendChild(script);
</script>
</body>
您将在两个浏览器中都看到警报!
我使用以下内容一个接一个地加载脚本(async=false
(:
var loadScript = function(scriptUrl, afterCallback) {
var firstScriptElement = document.getElementsByTagName('script')[0];
var scriptElement = document.createElement('script');
scriptElement.type = 'text/javascript';
scriptElement.async = false;
scriptElement.src = scriptUrl;
var ieLoadBugFix = function (scriptElement, callback) {
if ( scriptElement.readyState == 'loaded' || scriptElement.readyState == 'complete' ) {
callback();
} else {
setTimeout(function() { ieLoadBugFix(scriptElement, callback); }, 100);
}
}
if ( typeof afterCallback === "function" ) {
if ( typeof scriptElement.addEventListener !== "undefined" ) {
scriptElement.addEventListener("load", afterCallback, false)
} else {
scriptElement.onreadystatechange = function(){
scriptElement.onreadystatechange = null;
ieLoadBugFix(scriptElement, afterCallback);
}
}
}
firstScriptElement.parentNode.insertBefore(scriptElement, firstScriptElement);
}
这样使用:
loadScript('url/to/the/first/script.js', function() {
loadScript('url/to/the/second/script.js', function() {
// after both scripts are loaded
});
});
脚本中包含的一个错误修复程序是IE的延迟错误。
您正在从外部源加载脚本。所以你需要等到它加载。您可以在id完成后调用您的函数。
var headID = document.getElementsByTagName("head")[0];
var script = document.createElement('script'); script.type='text/javascript';
script.onload=scriptLoaded;
script.src="js/ordini/ImmOrd.js"; script.setAttribute("onload", "crtGridRicProd();");
headID.appendChild(script);
function scriptLoaded(){
// do your work here
}
当我修改代码时,我发现您试图将一个onload事件附加到脚本标记中。
<html>
<head>
<script type="text/javascript" onLoad="crtGridRicPrdo()">
...
</script>
</head>
<body>
...
</body>
</html>
这将是javascript代码的结果。你为什么不把它添加到身体标签上?这是一种经典的方式,也将在IE下正常工作。这也将减少你的代码:
var bodyID = document.getElementsByTagName("body")[0];
bodyID.setAttribute("onload", "crtGridRicProd();");
要在IE中动态加载js脚本(或css文件(,必须仔细检查加载文件的路径!路径应从">/"或">"开始/'。
请注意,IE有时会丢失前导斜杠,例如这里所描述的:https://olgastattest.blogspot.com/2017/08/javascript-ie.html