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var arr1 = [[0, 1], [2, 3], [4, 5]];
var arr2 = arr1.reduce(function (a, b) { return a.concat(b)} );
console.log(arr2);
结果如下图
var arr1 = [[0, 1], [2, 3], [4, 5]];
var arr2 = arr1.reduce(function (a, b) { return a.concat(b)} );
console.log(arr2);
结果如下图