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Small JavaScript Question

simX

simX

macrumors 6502a
Original poster
May 28, 2002
765
4
Bay Area, CA
I've been doing some tiny JavaScript stuff for web pages, and I've run across a problem. I want to convert some large numbers into exponential notation.

It seems the method is varname.toExponential(a), where a inside is the number of decimal places to which you want the number rounded.

The problem is, this method seems to not work with Safari, so I was wondering what the best way is to check if a browser supports this method, and if it doesn't, then just display the big long number. I don't want to simply browser sniff for Safari, because other browsers (like Mac IE) don't support it either -- so it would be nice just to check if the browser supports the function, and then use it if it does.

Any suggestions?
 
robbieduncan

robbieduncan

Moderator emeritus
Jul 24, 2002
25,611
893
Harrogate
I think this is what you want:
<HTML>
<HEAD>
<TITLE>Test</TITLE>
</HEAD>
<BODY>
<SCRIPT>
var longNum=0.987654321987654321;
alert (longNum);
if (longNum.toExponential)
{
alert(longNum.toExponential(5));
}
</SCRIPT>
</BODY>
</HTML>

On Safari (1.1) I only see the first alert.
 
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