event.isPropagationStopped()
返回: Boolean
event.isPropagationStopped()
描述：返回event.stopPropagation()是否已经在该事件对象上调用过了。
加入于: 1.3
event.isPropagationStopped()该方法不接受任何参数
W3C DOM Level 3 规范文档中描述了该事件方法。
示例
检查event.stopPropagation()是否已经被调用了。
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>event.isPropagationStopped demo</title>
<script src="https://code.jquery.com/jquery-1.10.2.js"></script>
</head>
<body>
<button>click me</button>
<div id="stop-log"></div>
<script>
function propStopped( event ) {
var msg = "";
if ( event.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>
演示结果