Replace a char at a postion in a String with another

[Ron Brennan]

Good evening.

I'd like to replace whatever character is aways at the postion 2 in a String
with another character. For example, the y in wxyx with b.

I'm sure it must be possible, but I'll be damned if I can find out how.

Thanks,
Ron.

[Randy Webb]

Re: Replace a char at a postion in a String with another

Ron Brennan wrote:
[color=blue]
> Good evening.
>
> I'd like to replace whatever character is aways at the postion 2 in a String
> with another character. For example, the y in wxyx with b.
>
> I'm sure it must be possible, but I'll be damned if I can find out how.
>
> Thanks,
> Ron.[/color]

var myString="abcde f";
var replaceCharacte r = "J";
var replacePosition = 2;
var outputVar = myString.substr ing(0,replacePo sition) +
replaceCharacte r +
myString.substr ing(replacePosi tion+1,myString .length);
alert(outputVar )

Probably easier, more efficient ways, to do that, but that one does what
you asked. It takes a substring up to the point you want to lose, takes
whats after it, then it puts it back together.

You could also use .replace:
<URL:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/script56/html/js56jsmthreplace.asp

/>
--
Randy
comp.lang.javas cript FAQ - http://jibbering.com/faq

[Ron Brennan]

Re: Replace a char at a postion in a String with another


"Randy Webb" <HikksNotAtHome @aol.com> wrote in message
news:lI-dnUo0LqEQvRncRV n-hg@comcast.com. ..[color=blue]
> Ron Brennan wrote:
>[color=green]
> > Good evening.
> >
> > I'd like to replace whatever character is aways at the postion 2 in a[/color][/color]
String[color=blue][color=green]
> > with another character. For example, the y in wxyx with b.
> >
> > I'm sure it must be possible, but I'll be damned if I can find out how.
> >
> > Thanks,
> > Ron.[/color]
>
> var myString="abcde f";
> var replaceCharacte r = "J";
> var replacePosition = 2;
> var outputVar = myString.substr ing(0,replacePo sition) +
> replaceCharacte r +
> myString.substr ing(replacePosi tion+1,myString .length);
> alert(outputVar )
>
> Probably easier, more efficient ways, to do that, but that one does what
> you asked. It takes a substring up to the point you want to lose, takes
> whats after it, then it puts it back together.
>
> You could also use .replace:
> <URL:
>[/color]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/script56/ht

ml/js56jsmthreplac e.asp[color=blue]
> />
> --
> Randy
> comp.lang.javas cript FAQ - http://jibbering.com/faq[/color]

I'll have to use Randy's method if I have to, but I suspect that
regexp.replace can accomplish the task elegantly. Anyone know if this is
even possible?

[Michael Winter]

Re: Replace a char at a postion in a String with another

On Sat, 30 Oct 2004 19:20:02 -0400, Ron Brennan <rbrennan@magma .ca> wrote:

[snip]
[color=blue]
> I'll have to use Randy's method if I have to, but I suspect that
> regexp.replace can accomplish the task elegantly. Anyone know if this is
> even possible?[/color]

(Very) briefly tested:

<string>.replac e(/^(..)./, '$1' + <character>)

So, from your example:

'wxyx'.replace(/^(..)./, '$1b'); // 'wxbx'

Mike

--
Michael Winter
Replace ".invalid" with ".uk" to reply by e-mail.

[Evertjan.]

Re: Replace a char at a postion in a String with another

Ron Brennan wrote on 30 okt 2004 in comp.lang.javas cript:
[color=blue]
> I'd like to replace whatever character is aways at the postion 2 in a
> String with another character. For example, the y in wxyx with b.[/color]

counting from 0
[color=blue]
> I'm sure it must be possible, but I'll be damned if I can find out
> how.
>[/color]

s = "wxyx"

a = s.split("")

a[2]="b"

s = a.join("")

alert(s)

--
Evertjan.
The Netherlands.
(Please change the x'es to dots in my emailaddress,
but let us keep the discussions in the newsgroup)

[Ron Brennan]

Re: Replace a char at a postion in a String with another

The replace solution seems best for my problem although the others will
solve it too. Thanks to everybody.