Uwah

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利用while循环结合some实现数组扁平,然后利用ES6 Set去重 ```js let arr = [[123,123,2,4,42,1,2,5], [5,8,6,54,3,9,9,3],0,7]; while(arr.some(item => Array.isArray(item))) { arr = [].concat(...arr); } let setlist = new Set([...arr]); console.log([...setlist]); //[123, 2, 4, 42, 1, 5, 8, 6,...

左侧300px;右侧flex: 1; 采用flex的固比模型