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Write JavaScript code to allow a school teacher to enter the names of his/her students and...

Write JavaScript code to allow a school teacher to enter the names of his/her students and the final grade for each student. Use parallel arrays named student[] and grade[] and a sentinel value so that the teacher can enter as many students as desired.

var student =new Array (200);
var grade=new Array(200);

student[]= prompt( "what is your students name");
document.getElementbyId(student[])

grade[]= prompt("what is the" + student[]+ " grade");
document.getElementbyId(student[])

document.write (student[] + " "+ grade[]);

engineering   Computer-Science   
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Homework Answers

Answer #1 
Explanation::
  • Code in JavaScript is given below
  • Sentinel value is "-1" in name
  • So when you enter -1 in name section then input taking is stopped
  • Output is given at the end

Code:

<!DOCTYPE html>

<html>

<body>

<p>Students data is as follows</p>

<b>Name Grade</b>

<script>

var student = new Array(200);

var grade = new Array(200);

var i=0;

while(i<200){

student[i]=prompt("What is your students name");

if(student[i]=="-1"){

break;

}

grade[i]=prompt("What is the "+student[i]+" grade");

document.write("<br>"+student[i]+" "+grade[i]);

i++;

}

</script>

</body>

</html>

_____________________________________________________________

OUTPUT::

Students data is as follows

Name Grade

Steve 89

Roger 90

Tom 56

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