want to alter one character in an image src

[somebody]

how do i take a .src (document.images[0].src =, for instance) and change one character in it? i'm working with an array which contains filenames, either 8 or 9 characters in length (keyword+#val+sub-val+".jpg") i want to change the character in the sub-val. ex: pict1b.jpg - change to pict1c.jpg, -or-, img3b.jpg - change to img3c.jpg...

change that "b" to a "c"

there will be no other instances of the letter "b" or "c" in these filenames;

how do i take the .src and use indexof and replace to make the b into a c?

i'm not quite intermediate, yet, so go easy on me! heeh

=b

[NewComputer]

Is all the text contained withing one document? If yes, use notepad 'control+h'... I think this is what you are asking...

[somebody]

er,

user clicks an image in webpage, new window opens, displays that image; how can i take that image's src and change one character in it? i would like to know the javascript to include to take document.images[0].src and subtract the "b" and replace it with a "c", the "b" will be the 5th or 6th character in every src, and there will be no other uses of "b" or "c" in the filenames.

i have pict1a.jpg, pict1b.jpg, pict1c.jpg for each picture, "a" is thumbnail, "b" is slideshow version, "c" is the fullsize one; i don't want to make a new array, i want to change the "b" to a "c" in the filename.

[NewComputer]

Yea, that sounds like J.D. territory. I am sure if JD is around, he can chime...

[J.D.]

Once you know the index of the character you want to replace, use one of the substring functions (substr, substring or slice) to recompose the string out of three parts - the part before the character, the alternative character and the part after:

var s = "abc5def";
var i = s.indexOf("5");
new String().concat(s.substring(0,i), "0", s.substring(i+1,s.length));

If you want to go fancy style, you can use regex. For example, the following code will replace numbers in the middle of the string with a dot:

"abc123def".replace(new RegExp("([a-z]+)[0-9]+([a-z]+)"), f);

function f(p1, p2, p3, p4, p5)
{
return p2 + "." + p3;
}

This won't work in older browsers, though - this form of replace wasn't in the first JS versions.

J.D.

[somebody]

you da man, i thought i was on the right track, well, i was/am, here!

so it's indexof, substr, and concat... thanks greatly!