How to prepend text to this img src using JQuery

Question

So basically I have this code and need to prepend some text to the src value.

<img src="/servlet/servlet.FileDownload?file=" alt="Foto" border="0"/></img>

Can I use JQuery to change the src value to

src="/b2b/servlet/servlet.FileDownload?file="

Thanks

Answer 1

$('img[src^="/servlet/servlet"]').attr('src', function(_,src) {
    return '/b2b' + src;
});

and image tags are self closing, so you should remove </img>