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A web page displays an input box that a user can use to a enter a...

A web page displays an input box that a user can use to a enter a grade from a test and a button that when pressed tells the user what letter grade they received for that test. Assume that the grade is stored in an integer named grade and you will put the letter grade in to a string variable named letter.

Write one or more if-statements in Javascript that will set the correct value into letter assuming the standard break points of

0-59 -> F
60-69 -> D
70-79 -> C
80-89 -> B
90-100 -> A
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Answer #1

<!DOCTYPE html>
<html>
<head>
<script>
function myFunction() {
   var grade;
   var score=parseInt(document.getElementById("score").value);
   if(score>=90)
       grade="A";
   else if(score>=80)
       grade="B";
   else if(score>=70)
       grade="C";
   else if(score>=60)
       grade="D";
   else
       grade="F";
  
  
document.getElementById("demo").innerHTML = "Grade : "+grade;
}
</script>
</head>

<body>


<input id="score"/>

<button onclick="myFunction()">Test it</button>

<p id="demo"></p>

</body>
</html>

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