Write a script that asks the user to enter two numbers, obtains the two numbers
ID: 3805423 • Letter: W
Question
Write a script that asks the user to enter two numbers, obtains the two numbers from the user and outputs text that displays the sum, product, difference and quotient of the two numbers. Use the techniques shown in Fig. 6.7.
1 <!DOCTYPE html>
2
3 <!-- Fig. 6.7: addition.html -->
4 <!-- Addition script. -->
5 <html>
6 <head>
7 <meta charset = "utf-8">
8 <title>An Addition Program</title>
9 <script type = "text/javascript">
10 <!--
11 var firstNumber; // first string entered by user
12 var secondNumber; // second string entered by user
13 var number1; // first number to add
14 var number2; // second number to add
15 var sum; // sum of number1 and number2
16
17 // read in first number from user as a string
18 firstNumber = window.prompt( "Enter first integer" );
19
20 // read in second number from user as a string
21 secondNumber = window.prompt( "Enter second integer" );
22
23 // convert numbers from strings to integers
24 number1 = parseInt( firstNumber );
25 number2 = parseInt( secondNumber );
26
27 sum = number1 + number2; // add the numbers
28
29 // display the results
30 document.writeln( "<h1>The sum is " + sum + "</h1>" );
31 // -->
32 </script>
33 </head><body></body>
34 </html>
Explanation / Answer
Below is the required code :
<!DOCTYPE html>
<html>
<head>
<meta charset = "utf-8">
<title>Integer Application</title>
<script>
var firstNumber; // first string entered by user
var secondNumber; // second string entered by user
var number1; // first number to add
var number2; // second number to add
var sum; // sum of number1 and number2
var product; //product of number1 and number2
var difference; //difference of number1 and number2
var quotient; //quotient of number1 and number2
// read in first number from user as a string
firstNumber = window.prompt( "Enter first integer" );
// read in second number from user as a string
secondNumber = window.prompt( "Enter second integer" );
// convert numbers from strings to integers
number1 = parseInt( firstNumber );
number2 = parseInt( secondNumber );
sum = number1 + number2; // add the numbers
product = number1 * number2; //multiply the integers
difference = number1 - number2; //subtract the integers
quotient = number1 / number2; //divide the integers
// display the results
document.writeln( "<h1>The sum is " + sum + "</h1>" );
document.writeln( "<h1>The product is " + product + "</h1>");
document.writeln
( "<h1>The difference is " + difference + "</h1>");
document.writeln( "<h1>The quotient is " + quotient + "</h1>");
</script>
</head><body></body>
</html>
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