Web Hosting Talk : Web Hosting Main Forums : Programming Discussion : Javascript: How to replace first character in String?

[grabmail]

what's the equivalent of $string{0} = $replacement in Javascript?

[laserlight]

Perhaps str[0] = ch?

[orbitz]

how about:

oldStr = new String("fun");
newStr= oldStr.replace(oldStr.charAt(0), "s");

[jabab]

var str="Hello world!"
var oldstr=str.substring(1);
var newfirstletter="Z";
var newstr=newfirstletter+oldstr;

[jabab]

Originally Posted by orbitz

how about:

oldStr = new String("fun");
newStr= oldStr.replace(oldStr.charAt(0), "s");

Guess what would happen if the string had more than one 'f' in it?

[orbitz]

don't guess. try it!

[laserlight]

Nah, I think mine is wrong. Havent worked with Javascript for quite a while, heh.

It should just be:

str = ch + str.substring(1);

which is pretty much your idea, jabab.

[orbitz]

replace function can do a whole lot more than just substring and concatenation
have you checked out the replace function i posted above

[jabab]

Didn't think that would happen

[grabmail]

ah. it's time like this that you start to appreciate php's built-in library of functions.