### 返回值:Booleanevent.isPropagationStopped()
### *V1.3*概述
根據事件對象中是否調用過 event.stopPropagation() 方法來返回一個布爾值。
這個事件方法在?[W3C DOM Level 3 specification](http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/events.html#Events-Event-isPropagationStopped)?有介紹。
### 示例
#### 描述:
檢測 event.stopPropagation() 是否被調用過。
##### 代碼:
~~~
<!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-latest.min.js"></script>
</head>
<body>
<button>click me</button>
<div id="stop-log"></div>
<script>
function propStopped(e) {
var msg = "";
if ( e.isPropagationStopped() ) {
msg = "called";
} else {
msg = "not called";
}
$("#stop-log").append( "<div>" + msg + "</div>" );
}
$("button").click(function(event) {
propStopped(event);
event.stopPropagation();
propStopped(event);
});
</script>
</body>
</html>
~~~
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