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Check if array includes all values
JavaScript, Array · Oct 20, 2020
Checks if all the elements in values are included in arr.
- Use
Array.prototype.every()andArray.prototype.includes()to check if all elements ofvaluesare included inarr.
const includesAll = (arr, values) => values.every(v => arr.includes(v));includesAll([1, 2, 3, 4], [1, 4]); // true
includesAll([1, 2, 3, 4], [1, 5]); // falseMore like this
Check if array includes any values
JavaScript, Array
Checks if at least one element of
valuesis included inarr.Pull values from array at index
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Mutates the original array to filter out the values at the specified indexes. Returns the removed elements.
Array of successive values
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Applies a function against an accumulator and each element in the array (from left to right), returning an array of successively reduced values.