gpa problem

**chelly_boo** · 11-09-2004 08:41 PM

I have this gpa program written but I can not get it to work, and I don't know what is wrong. Can someone please help.

<HTML>
<HEAD>
<Title> Rachelle Ahlness </Title>

<Script Language = "Javascript">
var input1 = window.prompt( "Please Enter your average", "0" );

var value1 = parseFloat( input1 );

function qualitypoints()
{
if ( value1 >= 100 )
qualitypoints = 4;
else
if ( 80 <= value1 >= 90 )
quality points = 3;
else
if (70 <= value1 >= 80 )
quality points = 2;
else
if (60 <= value1 >= 70 )
quality points = 1;
else
if (value1 <= 59)
quality points = 0;
}

document.writeln ( "You have " + qualitypoints + " quality points and a " + lettergrade + " letter grade" );

</SCRIPT>
</HEAD>
<BODY>
<p>Click refresh (or reload) to run the script again</p>
</BODY>
</HTML>

**doredson** · 11-15-2004 10:54 AM

This worked for me:

Code:

<HTML>
<HEAD>
<Title> Rachelle Ahlness </Title>

<SCRIPT language = "Javascript">
function qualitypoints(v)
{
	if ( v >= 100 )
	{
		return 4;
	}
	else if ( 80 <= v || v >= 90 )
	{
		return 3;
	}
	else if (70 <= v || v >= 80 )
	{
		return 2;
	}
	else if (60 <= v || v >= 70 )
	{
		return 1;
	}
	else if (v <= 59)
	{
		return 0;
	}
}


var input1 = window.prompt( "Please Enter your average", "0" );

var value1 = parseFloat( input1 );

var qp = qualitypoints(value1);

var grade = "F";

switch(qp) {
	case 1: grade = "D"; break;
	case 2: grade = "C"; break;
	case 3: grade = "B"; break;
	case 4: grade = "A"; break;
	default: grade = "F";
}

document.writeln ( "You have " + qp + " quality points and a grade of " + grade);

</SCRIPT>
</HEAD>
<BODY>
<p>Click refresh (or reload) to run the script again</p>
</BODY>
</HTML>

**doredson** · 11-15-2004 11:01 AM

actually, seems like qualitypoints function can be simplified:

Code:

function qualitypoints(v)
{
	if ( v < 60 )
	{
		return 0;
	}
	else if ( v < 70 )
	{
		return 1;
	}
	else if (v < 80 )
	{
		return 2;
	}
	else if (v < 90 )
	{
		return 3;
	}
	else
	{
		return 4;
	}
}

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