This appendix provides the answers to the questions you find at the end of each chapter in this book.
Exercise 1 Question
degFahren = 9 / 5 * degCent + 32
Exercise 1 Solution
<!DOCTYPE html> <html lang="en"> <head> <title>Chapter 2: Question 1</title> </head> <body> <script> var degCent = prompt("Enter the degrees in centigrade", 0); var degFahren = 9 / 5 * degCent + 32; document.write(degCent + " degrees centigrade is " + degFahren + " degrees Fahrenheit"); </script> </body> </html>
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Exercise 2 Question
The following code uses the
prompt() function to get two numbers from the user. It then adds those two numbers and writes the result to the page:
<!DOCTYPE html> <html lang="en"> <head> <title>Chapter 2, Question 2</title> </head> <body> <script> var firstNumber = prompt("Enter the first number",""); var secondNumber = prompt("Enter the second number",""); var theTotal = firstNumber + secondNumber; document.write(firstNumber + " added to " + secondNumber + " equals " + theTotal); </script> </body> </html>
However, if you try out the code, you’ll discover that it doesn’t work. Why not? Change the code so that it does work.
Exercise 2 Solution
The data that the
prompt() actually obtains is a string. ...