Text Processing with JavaScript

Recipe 36

Using a Function as the Replacement Pattern

Task

Suppose your task is to improve an online real-estate marketplace that lists property specifications in square feet. You need to write a code that finds square feet values and provides a square meter version in parentheses so that international buyers can easily understand them.

Solution

Start with creating a function that converts a square feet value to a square meter (m2):

function convertToM2(sqft) {

  // remove non-digit characters
  sqft = sqft.replace(/\D/g, "");

  // convert sqft to m2
  const m2 = sqft * 0.0929;

  // round to two decimal places and return it
  return m2.toFixed(2);
}

Now, you need a function that receives a string as input and scans it for digits followed ...