javascript-lodashHow can I use Lodash to perform a binary search in JavaScript?

Using Lodash, you can perform a binary search in JavaScript by using the _.sortedIndex() function. This function takes an array and a value as parameters and returns the index at which the value should be inserted into the array in order to maintain its sort order.

Example code

const arr = [1, 2, 4, 5, 7, 9, 10];
const value = 6;

const index = _.sortedIndex(arr, value);
console.log(index);

Output example

4

The code above searches for the index of the value 6 in the sorted array [1, 2, 4, 5, 7, 9, 10] using _.sortedIndex(). The output is 4, meaning that the value 6 should be inserted at index 4 for the array to remain sorted.

Code explanation

• const arr = [1, 2, 4, 5, 7, 9, 10]; - declares an array of sorted numbers
• const value = 6; - declares the value to search for in the array
• const index = _.sortedIndex(arr, value); - uses Lodash's _.sortedIndex() function to search for the index of the value in the array
• console.log(index); - prints the index of the value in the array

Helpful links

• Lodash Documentation - _.sortedIndex()

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