window.event.keyCode如何在Firefox上执行此操作？ [英] window.event.keyCode how to do it on Firefox?
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问题描述
我正在使用此代码检查keydown并在键关闭时显示字符串'Pressed'。
I'm using this code to check for keydown and display the string 'Pressed' while a key is down.
<body onKeyDown="doKey(window.event.keyCode)" onKeyUp="doKey2(window.event.keyCode)">
<script>
function doKey($key) {
document.getElementById('keydown').innerHTML='Pressed';
}
function doKey2($key) {
document.getElementById('keydown').innerHTML='';
}
</script>
<div id="keydown"></div>
问题在于，由于某些原因，它只适用于Chrome。我认为'window.event.keyCode'不会返回任何内容。我如何让它至少在Firefox中运行？谢谢
The problem is that for some reason it's only working on Chrome. I think the 'window.event.keyCode' doesn't return anything. How do I make it work at least in Firefox too? Thanks
推荐答案
<html>
<body onKeyDown="doKey(event)" onKeyUp="doKey2(event)">
<script>
function doKey(e) {
evt = e || window.event; // compliant with ie6
document.getElementById('keydown').innerHTML = evt.keyCode+' Pressed';
}
function doKey2(e) {
document.getElementById('keydown').innerHTML='';
}
</script>
<div id="keydown"></div>
</body>
</html>
如果我们传递事件作为参数，大多数现代浏览器将运作良好。我已经测试过Chrome 12，Firefox 4，IE 7/8/9。
If we passed event as parameter, most modern browsers will work well. I have tested with Chrome 12, Firefox 4, IE 7/8/9.
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