Does alert('hello'); work in pageLoad() function?
Alert does not work in pageLoad, why? thanks
<html>
<head>
<scri开发者_运维知识库pt 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.
Yes, but you need to invoke it somewhere:
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
pageLoad(); // invoke pageLoad immediately
</script>
Or you can delay it until all content is loaded:
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
window.onload = pageLoad; // invoke pageLoad after all content is loaded
</script>
alternatively you can self invoke it
(function pageLoad() {
alert('hello');
})();
pageLoad is never being called. Try the following:
<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 jQuery and the following syntax:
$(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.
Try:
<html>
<head>
<script type="text/javascript">
function pageLoad()
{
alert('hello');
}
</script>
</head>
<body onload="pageLoad()" />
</html>
加载中,请稍侯......
精彩评论