Program Explanation Given information: The bw_review.jsfile is provided under the folder html11→case1 within the reference material. Explanation: i) Open the bw_review.jsfile in the HTML editor. ii) Now, go to the source code section of the bw_review.jsfile and scroll down the file. Now, add the appropriate comment for the content of the JavaScript file highlighted in bold as shown below: "use strict"; /* New Perspectives on HTML5, CSS3, and JavaScript 6th Edition Tutorial 11 Case Problem 1 Author: Date: Filename: bw_review.js Functions List: init() Initializes the contents of the web page and sets up the event handlers. lightStars(e) Function that colors the stars representing the user rating for the book. turnOffStars(e) Function that restores the stars to empty colors, removing the user rating for the book. updateCount() Updates the count of characters in the wordCountBox element. countCharacters(textStr) Returns the number of a non-whitespace characters withintextStr */ //insert an event handler that runs the init() function window.onload = init; //init function definition functioninit() { //declaration of the stars variable that stores an object //collection ofthe reviewing stars, referenced by the //span#starsimg selector. var stars = document.querySelectorAll("span#starsimg"); //for loop runs till stars length for (var i = 0; i <stars.length; i++) { //change the cursor style to pointer and stars[i].style.cursor = "pointer"; //mouseenter event stars[i].addEventListener("mouseenter", lightStars); } //an event listener for the comment text area box document.getElementById("comment").addEventListener("keyup", updateCount); } //lightStars() function functionlightStars(event) { //variables definition varstarNumber = event...

To add the appropriate comment in the bw_review.jsfile with the descriptive information of the variables and the functions.

New Perspectives on HTML5, CSS3, and JavaScript

6th Edition

ISBN: 9781305503922

Author: Patrick M. Carey

Publisher: Cengage Learning

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