In the script element, add the JavaScript code for getting the users entry while the entry amount isnt 999 This should provide for multiple entries and conversions Add the JavaScript code for deriving the letter grade from the table above and displaying it in an alert dialog box If you havent already done so, add data validation to make sure the entry is a valid number from 0 through 100 If the entry is invalid, the application should just display the starting prompt dialog box It doesnt need to display a special error message To derive the letter grade, you should use this table A 88 100 B 80 87 C 68 79 D 60 67 F 60 This what I have so far and I'm stuck on the if else part Show letter grade var entry var letterGrade var total 0 var entryCount 0 var errorString Entry must by a valid number from 0 through 100 Or enter 999 to end entries do get something from user entry prompt( Enter number grade from 0 through 100 Or enter 999 to end entries , 999) the user may also enter something that is not a number if(isNaN(entry)) check if it is not a number alert(errorString) show error if not a number else you now know you have a number so you can parse it entry parseInt(entry) convert to number now check for a valid number if (entry 0 entry 80) letterGrade B else if (entry 88) letterGrade A total entry add the total entryCount 1 add ont to count display entry and grade alert( Number grade entry Letter grade letterGrade) else if not in valid range check if its 999 if (entry 999) alert(errorString) no show error while (entry 999) do this till 999 is entered This page is displayed after the JavaScript is executed

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Question: In the script element, add the JavaScript code for getting the users entry while the entry amount isnt 999. This should provide for multiple entries

In the script element, add the JavaScript code for getting the users entry while the entry amount isnt 999. This should provide for multiple entries and conversions.

Add the JavaScript code for deriving the letter grade from the table above and displaying it in an alert dialog box.

If you havent already done so, add data validation to make sure the entry is a valid number from 0 through 100. If the entry is invalid, the application should just display the starting prompt dialog box. It doesnt need to display a special error message.

To derive the letter grade, you should use this table:

A 88-100 B 80-87 C 68-79 D 60-67 F < 60

This what I have so far and I'm stuck on the if else part

Show letter grade

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