Pass your values inside binarySearch([1,2,3,4,5,6,7],6).

Here,

[1,2,3,4,5,6,7] is your main array.

6 is the value you are looking for.

If value is not available inside the array it will return you -1.

Otherwise it will return array position index.

Time complexity = O log(n)

Searching algorithm = Binary search

Use:

npm install fast-binary-search

const binarySearch = require('fast-binary-search');

console.log(binarySearch.binarySearch([1,2,3,4,5,6,7,8,9],9));