Question

Develop a webpage that takes as input miles driven and gallons used (use integers). The script should calculate and output the miles driven, the gallons used, and the miles per gallon. Use PROMPT dialog boxes to obtain input from the user. Use an ALERT dialog box to display output. Perform the request for input, calculation, and output in a function. Give the function a name like, chevyMPG (pick your model of choice – it does not need to be "chevy"). Make the function run when the webpage loads

Answer 1

Here is the main answer to your query:To develop a webpage that takes as input miles driven and gallons used (use integers) and performs calculation and output in a function, follow the below steps:Step 1: To take input from the user through a prompt dialog box, use the below code snippet:var miles = parseInt(prompt("Enter miles driven"));var gallons = parseInt(prompt("Enter gallons used"));In the above code snippet, the parseInt function is used to convert the input string into an integer.Step 2: Calculate the miles per gallon by dividing miles by gallons and use the below code snippet:var mpg = miles/gallons;Step 3: To display output through an alert dialog box, use the below code snippet:alert("Miles driven: " + miles + "\\Gallons used: " + gallons + "\\Miles per gallon: " + mpg.toFixed(2));The toFixed(2) function is used to round the value of mpg to 2 decimal places.Step 4: Define a function chevyMPG that takes miles and gallons as input parameters, performs calculation and output, and runs when the webpage loads.function chevyMPG(){ var miles = parseInt(prompt("Enter miles driven")); var gallons = parseInt(prompt("Enter gallons used")); var mpg = miles/gallons; alert("Miles driven: " + miles + "\\Gallons used: " + gallons + "\\Miles per gallon: " + mpg.toFixed(2));}window.onload = chevyMPG;Step 5: Use the conclusion in the answer in more than 100 words, to summarize the solution that is developed.In conclusion, to develop a webpage that takes input of miles driven and gallons used and performs calculation and output in a function, we use the window.onload event to call the function chevyMPG that takes the input, calculates miles per gallon, and outputs the result using prompt and alert dialog boxes. We use parseInt function to convert the input string into an integer. We use the toFixed function to round the output value to 2 decimal places.