Number Functions

This document covers JavaScript Number functions available in Ensemble with examples. Each function is briefly explained and followed by an example demonstrating its usage.

toFixed

The toFixed() method in JavaScript is used to format a number using fixed-point notation. It takes one argument, which is the number of digits to appear after the decimal point. The method returns a string representation of the number with the specified number of decimal places.

Syntax:

numObj.toFixed(digits);

Parameters:

• digits: An integer specifying the number of digits to appear after the decimal point. This is required unlike in js where it is optional.

Example:

var num = 123.456;
var fixedNum = num.toFixed(2);
 
console.log(fixedNum); // Output: "123.46"

In this example, the toFixed() method is called on the num variable with the argument 2. This means that the number will be formatted with two decimal places. The result is the string "123.46".

toString

The toString() method in JavaScript is used to convert a number to a string. It can also be used to represent the number in a different base (radix) by providing an optional argument.

Syntax:

numObj.toString([radix]);

Parameters:

• radix (Optional): An integer between 2 and 36 that represents the base to use for representing numeric values. The default value is 10.

Example:

var num = 42;
var numStr = num.toString();
var numStrInBase16 = num.toString(16);
 
console.log(numStr); // Output: "42"
console.log(numStrInBase16); // Output: "2a"

In this example, the toString() method is called on the num variable without any arguments, which means that the number will be converted to a string in base 10 (decimal). The result is the string "42".

The toString() method is then called again on the num variable, but this time with the argument 16. This means that the number will be converted to a string in base 16 (hexadecimal). The result is the string "2a".