reduce数组去重

陌上花开-可缓缓归矣

于 2018-03-07 21:50:17 发布

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本文链接：https://blog.youkuaiyun.com/mshkkhhgy/article/details/79477562

版权

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<script>
	let arr = [1,2,1,2,3,5,4,5,3,4,4,4,4];
	let result = arr.sort().reduce((init, current)=>{
	    if(init.length===0 || init[init.length-1]!==current){
	        init.push(current);
	    }
	    return init;
	}, []);
	alert(result);//1,2,3,4,5
</script>
</head>
<body>
</body>
</html>