JS回调函数理解

5年前 ⋅ 0 
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	<meta charset="utf-8">
	<title>JS回调函数理解</title>
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	<h1>JS回调函数的理解</h1>

	<script type="text/javascript">

		function a(callbackFunction){
			alert("这是parent函数a");
			var m =1;
			var n=3;
			return callbackFunction(m,n);
		}

		function b(m,n){
			alert("这是回调函数B");
			return m+n;
		}

		var result = a(b);
		alert("result = "+ result);

	</script>

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