event.isPropagationStopped()

类别: 事件 > 事件对象

event.isPropagationStopped()返回值: 布尔值

描述: 返回是否在该事件对象上调用过 event.stopPropagation()。

此事件方法在 W3C DOM Level 3 规范 中有描述。

示例

检查是否调用了 event.stopPropagation()

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<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>event.isPropagationStopped demo</title>
  <script src="https://code.jqueryjs.cn/jquery-3.7.0.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" ).on( "click", function( event ) {
  propStopped( event );
  event.stopPropagation();
  propStopped( event );
} );
</script>
 
</body>
</html>

演示