asked on

How would I do this in a Javascript loop?

I have to write a program / function that prints the numbers from 1 to 100. But for multiples of three print "Fizz" instead of the number and for the multiples of five, I've got to print "Buzz". For numbers which are multiples of both three and five, I've got to print "FizzBuzz".

How?

Randy Poole

Use the modulus operator to see if your loop variable has a remainder

<html>
<head>
<script language="javascript">
	function doloop()
	{
		var c1,c2,r,o;
		o="";
		for (var c=1;c<=100;c++)
		{
			r="";
			c1=c % 3;
			c2=c % 5;
			r+=((c % 3)==0)?"Fizz":"";
			r+=((c % 5)==0)?"Buzz":"";
			r=r==""?(c):r;
			o+=r+"<br />";
		}
		document.getElementById("output").innerHTML=o;
	}
</script>
<head>
<body onload="doloop();">
	<div id="output">
	</div>
</body>
</html>

Open in new window

gplana

Try this:

<html>
<body onload="doloop();">
<script language="javascript">
		var c1,c2,r,o;
		for (var i=1;i<=100;i++)
		{
			if (i%15==0) document.write('FizzBuzz<br />')
                        else if (i%5==0) document.write('Buzz<br />')
                        else if (i%3==0) document.wirte('Fizz<br />');
                        else document.write( i + '<br />');
		}
</script>

</body>
</html>

Open in new window

Hope it helps.

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gplana

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Bruce Gust

ASKER

Excellent!