Javascript alert('你好'); 在 pageLoad() 函数中工作？
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Does alert('hello'); work in pageLoad() function?
提问by Valamas
Alert does not work in pageLoad, why? thanks
警报在 pageLoad 中不起作用，为什么？谢谢
<html>
<head>
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
</script>
</head>
<body />
</html>
Problem found:Dave Ward suggests that since my page does not have a script manager (which calls PageLoad for me). that is the reason I was puzzled. I never realised I had to call it for myself when there was no script manager.
发现问题：Dave Ward 建议，因为我的页面没有脚本管理器（它为我调用 PageLoad）。这就是我感到困惑的原因。当没有脚本管理器时，我从未意识到我必须为自己调用它。
采纳答案by user113716
Yes, but you need to invoke it somewhere:
是的，但您需要在某处调用它：
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
pageLoad(); // invoke pageLoad immediately
</script>
Or you can delay it until all content is loaded:
或者您可以延迟它直到加载所有内容：
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
window.onload = pageLoad; // invoke pageLoad after all content is loaded
</script>
回答by generalhenry
alternatively you can self invoke it
或者你可以自己调用它
(function pageLoad() {
alert('hello');
})();
回答by Luke Bennett
pageLoadis never being called. Try the following:
pageLoad永远不会被调用。请尝试以下操作：
<html>
<head>
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
window.onload = pageLoad;
</script>
</head>
<body />
</html>
Note a better way of doing this is by using jQueryand the following syntax:
请注意，更好的方法是使用jQuery和以下语法：
$(window).load(pageLoad);
You could also use an alternative Javascript framework as most provide a similar way of doing this. They all take account of a number of issues related to attaching to event handlers.
您也可以使用替代的 Javascript 框架，因为大多数框架都提供了类似的方法。它们都考虑了与附加到事件处理程序相关的许多问题。
回答by bbosak
Try:
尝试：
<html>
<head>
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
</script>
</head>
<body onload="pageLoad()" />
</html>
