Concept explainers
a)
To create the updateCount() function, to count the total of the number of characters that the user has typed into the comment text area box and declare the commentText variable inside the updateCount() function in the bw_review.js file.
b)
To write code statement to call the countCharacters0 function within the commentText as the parameter value to calculate the number of characters in commentText and to store the value in the charCount variable inside the updateCount() function in the bw_review.js file.
c)
To declare the wordCountBox that references the wordCount input box inside the updateCount() function in the bw_review.js file.
d)
To change the value stored in the wordCount input box to the text string charcount/1000 inside the updateCount() function in the bw_review.js file.
e)
To change the charCount variable if its value is greater than 1000 , change the style of the wordCount input box to a white font on a red background, otherwise set the style to a black font on a white background inside the updatecount() function in the bw_review.js file.
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