javascript利用对象键值对中键的唯一性实现数组去重

时间：2015-05-14 14:22:21 收藏：0 阅读：666

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"http://www.w3.org/TR/html4/loose.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
	<head>
		<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
		<script type="text/javascript" charset="UTF-8">
			
			var arr = [1,2,3,2,3,4,5,6,7,8,9,8,5]; 
			
			//将数组转换成对象
			 //利用对象的key值不能重复这一特性
			var toObject = function(array) {
			  var obj = {};
			  for(var i=0,j=array.length;i<j;i++){
			  	obj[array[i]] = true;
			  }
			  return obj;
			}
			
			//再将对象转换成数组
			var toArray = function(obj){
				
				var arr = [];
				for(var i in obj){
					arr.push(i);
				}
				return arr;
			}
			
			//综合前两者，完成去数组重复项方法
			var uiq = function(arr){
				return toArray(toObject(arr));
			}
			var arr1 = uiq(arr);
			console.log(arr1); 
			
		</script>
		
	</head>
	<body>
	</body>
</html>