Created
March 28, 2017 08:39
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| let array = [[1,2,[3]],4] | |
| const flatten = (arr) => { | |
| var flatArray = [] | |
| arr.forEach((i) => { | |
| if (Array.isArray(i)) { | |
| flatArray = flatArray.concat(flatten(i)) | |
| } else { | |
| flatArray.push(i) | |
| } | |
| }) | |
| return flatArray | |
| } | |
| let flatArray = flatten(array) | |
| // => [1, 2, 3, 4] |
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