Create a script that asks for the student's percentage point through a prompt box. Using the following scenarios write if else statements that determine the student's letter grade and display the grade in an alert box: Percentage Letter Grade >=90 A Between 80 and 89 B Between 70 and 79 C Between 60 and 69 D Lower than 60 F

Following are the java script code for the above question.

Explanation:

Program :

var percentage= prompt("Enter the percentage of the student"); // take the input from the user.

if(percentage>=90)//check condition for greator than 90.

alert("your grade is \"A\"");

else if(percentage>=80) // check condition for 80 and 89.

alert("your grade is \"B\"");

else if(percentage>=70) // check condition for 70 and 79.

alert("your grade is \"C\"");

else if(percentage>=60) // check condition for 60 and 69.

alert("your grade is \"D\"");

else // check condition for less than 60.

alert("your grade is \"F\"");

Output:

If the user input 60, it will prints D.If the user inputs 59, it will prints f.

Code Explanation:

The above code is in a javascript language, In which the first line is used to display the message and take the input from the user in the alert box.Then the percentage is checked by the help of in if, else if and else statement and print the grade.Then the grade is printed with the help of an alert box.

CDD3 X C4XD

Explanation: