返回到：Prototype – 事件处理
此方法确定与按钮相关的鼠标事件是否与“左”（实际上是主要的）按钮有关。
语法
Event.isLeftClick(event);
返回值
如果按下左键则返回真。
例子
注意– 看起来它在 MSIE 中不起作用。
HTML
x
28
28
1
<html>2
<head>3
<title>Prototype examples</title>4
<script type = "text/javascript" src = "/javascript/prototype.js"></script>5
6
<script>7
// Register event 'click' and associated call back.8
Event.observe(document, 'click', respondToClick);9
10
// Callback function to handle the event.11
function respondToClick(event) {12
var bool = Event.isLeftClick(event);13
14
if ( bool ) {15
alert("Left button is pressed...." );16
}17
}18
</script>19
</head>20
21
<body>22
<p id = "note"> Click anywhere to see the result.</p>23
<p>This example may not work in IE.</p>24
<p id = "para1">This is paragraph 1</p>25
<p id = "para2">This is paragraph 2</p>26
<div id = "division">This is divsion.</div>27
</body>28
</html>返回到：Prototype – 事件处理
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作者：terry，如若转载，请注明出处：https://www.web176.com/prototype_api/8552.html
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