To automatically call a JavaScript function from an HTML document, you can use theonloadattribute of thebodyelement to trigger the function when the page finishes loading. <body onload="myFunction()"> In this example, theonloadattribute is added to thebodyelement, and its value is set to the...
handler, false); }else if(document.attachEvent){ document.attachEvent("onreadystatechange", handler); window.attachEvent("onload", handler); } // 返回whenReady()函数 return function whenReady(f){ if(ready) f.call(document); // 若准备完毕，就运行 else funcs.push...
window.onload = function() { document.getElementById("myInput").value = "新的默认值"; }; </script> </body> </html> 在上面的代码中,我们通过Javascript Onload事件来设置输入框的默认值。当页面加载完成后,Javascript代码会将输入框的默认值从"默认值"修改为"新的默认值"。 这样,当用户打开页面时,...
1<head>2<script>3console.log(document.body.innerHTML);4</script>5</head> 上面代码执行时会报错,因为此时body元素还未生成。 一种解决方法是设定DOMContentLoaded事件的回调函数。 1<head>2<script>3document.addEventListener("DOMContentLoaded",function(event) {4console.log(document.body.innerHTML);5});6...
<html> <body onload="load();"> </body> </html> 1. 2. 3. 4. 方法二:window.οnlοad=function 引入js,在script中使用window.onload=function方法 <!-- 全局js --> <script src="../js/jquery.min.js?v=2.1.4"></script> <script type="text/javascript" src="scroll.js"></script>...
this.OnFailed=function(src) { Self.FailedCallback(src); }; //功能:当文件加载失败时执行的回调函数 //参数:src——加载失败的文件 //返回:(无) this.FailedCallback=function(src){}; } 页面代码: <html> <body> <script language="javascript" type="text/javascript" src="DynamicLoad.js"></scr...
问在onload事件中调用脚本与将代码放在html末尾之间的区别EN当iframe.src重新指定一个url时会重新执行...
<button onClick= “javascript:JavaScript_Function()”> The JavaScript that you wrote would be processed when the user “clicked” the button. The JavaScript_Function() itself would be at the top of the page (“HEAD” section), but the button would be in the middle of the page (“BODY”...
function handleJSONP(res) { console.log(res); } const script = document.createElement("script"); // 客户端与后端约定以callback的值确定调用的函数名称 script.src = "http://localhost:3000?callback=handleJSONP"; document.body.insertBefore(script, document.body.firstChild); ...
scr.attachEvent("onload", function(){ //如果为ie浏览器则页面加载完成后立即执行 //原则上下面token不需要传,现在临时获取登录返回的token拼接到跳转url的后面 token = document.getElementById("login").contentWindow.document.body.innerHTML; token = token.substring(token.indexOf("accessToken")+14, token...