Get Programming with JavaScript

Get Programming with JavaScript - Listing 5.05

Listing 5.05 - Using the square function

var square;

square = function (numberToSquare) {
    var result;
    result = numberToSquare * numberToSquare;
    console.log(numberToSquare + " * " + numberToSquare + " = " + result);
};

square(10);
square(-2);
square(1111);
square(0.5);

Further Adventures

Listing 5.05 - Using the square function - Tasks 1 & 2

Define a cube function that cubes any number passed in as an argument.
Call your cube function four times with different arguments to test it.

var square;
var cube;    // Declare a variable

square = function (numberToSquare) {
    var result;
    result = numberToSquare * numberToSquare;
    console.log(numberToSquare + " * " + numberToSquare + " = " + result);
};

// Define a new function
// Assign it to the cube variable
cube = function (numberToCube) {
    var result;
    result = numberToCube * numberToCube * numberToCube;
    console.log(numberToCube + " cubed = " + result);
};

square(10);
square(-2);
square(1111);
square(0.5);

// Call the function
cube(2);
cube(-2);
cube(10);
cube(0.5);

Listing 5.05 - Using the square function - Task 3

Define and test a squareRoot function to find square roots and display them on the console.

var square;
var cube;
var squareRoot;    // Declare a variable

square = function (numberToSquare) {
    var result;
    result = numberToSquare * numberToSquare;
    console.log(numberToSquare + " * " + numberToSquare + " = " + result);
};

cube = function (numberToCube) {
    var result;
    result = numberToCube * numberToCube * numberToCube;
    console.log(numberToCube + " cubed = " + result);
};

// Define and assign a function
squareRoot = function (numberToRoot) {
    var result;
    result = Math.sqrt(numberToRoot);
    console.log("The square root of " + numberToRoot + " is " + result);
};

square(10);
square(-2);
square(1111);
square(0.5);

cube(2);
cube(-2);
cube(10);
cube(0.5);

// Test the function
squareRoot(9);
squareRoot(100);
squareRoot(2);
squareRoot(0.25);