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Javascript初学者实例教程(2):event对象和事件


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实例二、

     本实例主要介绍了event对象和事件的简单应用。

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>mouse</title>
<script language="javascript">
function catchEvent()
{
var eventSrcID = event.srcElement.id;
var eventtype = event.type;
alert(eventSrcID+"捕获到了"+eventtype+"事件");
}
function GetPosition()
{
 var posX = event.clientX;
 var posY = event.clientY;
 window.status = "鼠标的位置是("+posX+","+posY+")";
}
function GetKey()
{
textfield.value=event.keyCode+","+String.fromCharCode(event.keyCode);
}
</script>
</head>
<body onMouseMove="GetPosition();" >
鼠标在文本框中按下:<input type="text" name="textfield" onMouseDown="alert('鼠标在文本框中按下')"><br/>
键盘按下:<input type="text" name="textfield" onKeyDown="alert('键盘按下');"><br/>
event对象:<br/>
<input type="text" name="textfield" id="text" onClick="catchEvent();"><br/>
<input type="submit" name="Submit" value="提交" id="button" onClick="catchEvent();"><br/>
</body>
</html>

效果演示:


[Ctrl+A 全部选择 提示:你可先修改部分代码,再按运行]