on
English [?n] US [ɑ:n]
prep.(??? ???) to;(??? ???) on...; ..
adv. on; ???, (??) ???
adj. ?? ??, ???; ???
英[??n?l??d]
vt.?? ??; ??, ?? vi. ?? ?? ?? ?? ??; [????] ??(??) 3?? ??: unloaded ?? ??: ???
?????? onunload ?? ???
??: ???? ???? ??? ? ?????.
??: ??onunload="SomeJavaScriptCode"
????: SomeJavaScriptCode ?????. ? ???? ??? ? ??? JavaScript? ?????.?
?????? onunload ?? ?
<html>
<head>
<meta charset="UTF-8">
</head>
<body onunload="alert('The onunload event was triggered')">
</body>
</html>