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  • 数组扁平化方法

      //方法一:循环递归
        var complexdatalist = [1, [2, 3], [4, 5], [6, [7, 8]], [9, [10, [11, 12]]]]
        function myconcat(complexdatalist) {
            var simpledatalist = [];
            for (var i = 0; i < complexdatalist.length; i++) {
                if (Array.isArray(complexdatalist[i])) {
                    simpledatalist = simpledatalist.concat(myconcat(complexdatalist[i]));
                } else {
                    simpledatalist = simpledatalist.concat(complexdatalist[i]);
                }
            }
            return simpledatalist
        }
    
        console.log(myconcat(complexdatalist));
    
        //方法2:reduce累加器
        var complexdatalist = [1, [2, 3], [4, 5], [6, [7, 8]], [9, [10, [11, 12]]]]
        function flatten(arr) {
            return arr.reduce(function (prev, item) {
                return prev.concat(Array.isArray(item) ? flatten(item) : item);
            }, []);
        }
        console.log(flatten(complexdatalist));
    
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  • 原文地址:https://www.cnblogs.com/sanqianjin/p/9353913.html
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