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help with convert strings
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ChaosMaker
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O.P. help with convert strings
hi all, i want convert strings to numbers
im using this
var number1='5';
var number2='4';
var result=number1+number2;
Messenger.MyPersonalMessage=result
but the result is 54, and not 9. why ?
how can i convert '5' to 5 ?
08-08-2010 04:23 AM
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Adeptus
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RE: help with convert strings
quote:
var number1='5';
var number2='4';
var result=number1+number2;
...
but the result is 54, and not 9. why ?
To answer your question for your specific example: because you have indicated the values are strings by using single quotes.  Remove the quotes and try the following:
code:
var number1 = 5;
var number2 = 4;
var result = number1 + number2;
Now you should be getting 9 as the result. 

Of course, you won't always be able to do this when your values are coming from somewhere else and happen to be strings.  When that happens you will want to check out parseInt() and parseFloat():
code:
var number1 = '5';
var number2 = '4';
var result = parseInt(number1) + parseInt(number2);
This should yield 9 as well.
08-08-2010 06:00 AM
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Spunky
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RE: help with convert strings
In addition to that, a trick I tend to use is:

Javascript code:
var number1 = '5';
var number2 = '4';
var result = (number1 * 1) + (number2 * 1);


The brackets shouldn't be needed, but I use them anyway

This post was edited on 08-08-2010 at 07:29 PM by Spunky.
<Eljay> "Problems encountered: shit blew up" :zippy:
08-08-2010 01:34 PM
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NanaFreak
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RE: help with convert strings
quote:
Originally posted by Spunky
Javascript code:
var result = (number1 * 1) + (number2 * 2);



shouldnt the second one be * 1 still? :P
08-08-2010 02:19 PM
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Spunky
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RE: help with convert strings
Yeah, I was in a rush going out...
<Eljay> "Problems encountered: shit blew up" :zippy:
08-08-2010 07:29 PM
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