2-convert-a-number-to-a-string!.md

Problem:

We need a function that can transform a number into a string.

What ways of achieving this do you know?

Examples:

numberToString(123); // returns '123';`   
numberToString(999); // returns '999';`

Solution

function numberToString(num) {
  return num.toString();
}

function numberToString(num) {
  return String(num);
}

Note: String(value) vs value.toString()

• value.ToString() will cause error if value is null or undefined
• String(value) mostly works like value + ''

function numberToString(num) {
  return num + '';
}

function numberToString(num) {
  return '' + num;
}

Note: concatenation

• Aything concatenated with string will coerced to string

const numberToString = num => `${num}`;