parseInt method

[Gina vernon]

Hi,
I have the following code that does not run when I use the parseInt method:

    
<script type="text/javascript">
   
var t = document.title; 
var hyph = t.indexOf('-');
var com = t.indexOf(',');
var num = t.subStr(parseInt(hyph),(parseInt(com)-parseInt(hyph)));
 alert (num);
</script>

Am I using the method right?

Thanks.

[Eric Pascarello]

indexOf returns a number, so why are you using parseInt to start with?

Eric

[Eric Pascarello]

Regular Expression may be easier:

var str = "asdf-2314as,dsd";
var re = /\-([^,]*),/;
var myMatch = str.match(re);
if(myMatch){
  alert(myMatch[1]);
}

Eric

[Gina vernon]

Eric,
Thanks for the reply. I am not sure if reg exps are right for my requirement. The string that I am searching looks like this 'xyz - 34534, y.5'.
I need to fetch the integer between the hyphen and the comma. This integer is of variable length. The only things that remain constant in this string are the hyphen and comma.

Thanks.

[Bear Bibeault]

That sounds like a textbook case for a regular expression.

[Eric Pascarello]

Only thing you would need to change is

var re = /\-\s?([^,]*),/; 

and

if(myMatch){  
  var myNum = parseInt(myMatch[1],10);  
}

The regular expression will yank it out for you. Test it out!

Eric

[Gina vernon]

Eric,
Thanks! I didn't check the thread and I found that this works too:

    
var patt=/(\d{1,})(?=,)/g;
alert(str.match(patt));

[Eric Pascarello]

I would just be careful with the look ahead since IE can be buggy with it. I am not sure if older versions of IE support it.

Eric

[Gina vernon]

Thanks!