Javascript addition query

Question

Don't feel foolishness in my question. Below is my scenario. Please advice

var num = 02; var add = num + 1 ;

Getting result is 3, but I need it as 03. Is it possible.

Do you mean you need a _string_ with the characters "01" in it? Or the "octal representation"? How do you intend to use this value of `03`? — Floris, Feb 21 '13 at 11:45
Possible duplicate of http://stackoverflow.com/q/1267283/2034234 — Ruben Infante, Feb 21 '13 at 11:45
I don't need it as a string. I need to increment and decrement the value according to my purpose. — user1817630, Feb 21 '13 at 11:47
possible duplicate of [How do I format 7 as '07' in string in JavaScript?](http://stackoverflow.com/questions/10864288/how-do-i-format-7-as-07-in-string-in-javascript) — JJJ, Feb 21 '13 at 11:47
If you don't need it as a string, what do you need it as? If you're doing addition, the trailing 0 is superfluous... — BenM, Feb 21 '13 at 11:48
guys my scenario is totally different. I need an output like my query. For you better understanding I have given simple example. — user1817630, Feb 21 '13 at 11:53
"For your better understanding".... Clearly as given nobody understands what you are asking, how is `03` different from `3` _except_ when represented as a string?.... Are you outputting this result? Printing it? — Floris, Feb 21 '13 at 11:58

score 0 · Accepted Answer · edited Feb 21 '13 at 12:00

0

You'll need to write a padding function:

function strpad(string, length, padChar) 
{
    var o = string.toString();
    if(!padChar) 
    { 
       padChar = '0'; 
    }

    while (o.length < length) 
    {
        o = padChar + o;
    }
    return o;
};

And then call it using:

var num = 3;
var add = strpad((3 + 1), 2); // will return '04' as a string.

edited Feb 21 '13 at 12:00

Floris

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answered Feb 21 '13 at 11:47

BenM

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It will be great if you explain the code for the javascript starters :) – user1817630 Feb 21 '13 at 12:10

score 0 · Answer 2 · answered Feb 21 '13 at 11:49

0

you can do it like this

<script>
var num=2;
var add= parseInt(num + 2);

if(parseInt(add) <10)
   {
      add= '0'+add; // if single digit no. then concat 0 before the no.
   }

</script>

answered Feb 21 '13 at 11:49

Saswat

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Javascript addition query

2 Answers2