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...
<script type="text/javascript"> var ss = 5;//子界面中的变量 function childSay() { alert("我是子页面的say方法"); } function callParent() { parent.parentSay();//执行父界面中的函数 } </script> </body> </html> 父界面:1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19...
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); ...
<script type="text/javascript"> window.onload = function () { //模拟ajax请求 function ajax(content) { console.log('ajax request ' + content); } function debounce(fun, delay) { return function (args) { //获取函数的作用域和变量
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...
transitional.dtd"> <html> <head> <title></title> <script src="Script/Script.js" type="text/javascript"></script> <link href="CSS/Styles.css" rel="stylesheet" type="text/css" /> </head> <body onload="SDK.ImportWebResources.showData()"> <div id="results" /> </body> <...
map.layers.insert(layer); }); } </script> <script type='text/javascript' src='http://www.bing.com/api/maps/mapcontrol?callback=GetMap&key=[YOUR_BING_MAPS_KEY]' async defer></script> </head> <body> <div id="myMap" style="position:relative;width:600px;height:400px;"></div> ...