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countOccurrences

The countOccurrences () function counts the number of occurrences of a value in an array..

Parameters​

ParameterTypeDescription
arrArrayThe array to search for occurrences of val.
valStringThe value to search for in the array.

Returns​

  • Number: The number of occurrences of val in arr.

Throws​

  • Error: If arr is not an array.

Example​

const utils = require('utils-core.js');
const arr = [1, 2, 3, 4, 1, 2, 1];
const val = 1;
const count = utils.arrays.countOccurrences(arr, val);
console.log(count); // Output: 3

See also​