I have a specific array that needs some filtering done. My goal is to remove items that are null, false, and the string "whoops" using JavaScript's filter method.
let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
I have a specific array that needs some filtering done. My goal is to remove items that are null, false, and the string "whoops" using JavaScript's filter method.
let pairsByIndexRaw = [[0, 3], [1, 2], [2, 1], null, [1], false, "whoops"];
To verify this, you can utilize the Array.isArray() function.
const filtered = pairsByIndexRaw.filter(pre => Array.isArray(pre))
Array.prototype.filter iterates through each element in the array. If the condition that the element is an array is met, the element is included in the filtered array; otherwise, it is excluded.
const filtered = parisByIndexRaw.filter(pre => Array.isArray(pre) && pre.length === 2)
The code snippet above ensures that the item is an array and has a length of exactly two.
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