replace mit regex und replacement callback

[Joachim]

Hi,

noe, du kommst um einen »callback« nicht herum ...

na gut, meine Variante:

// search for somthing with
    // chars, followed by numbers, followed by chars again...
    // and replace the numbers
    //
    var regex   =  /^([a-z]+)([0-9]+)([a-z]+)$/i;
    var str     =  "Andre23xxl";

// rebuild string like this: match1, replace, match3
    //
    var rebuild =  [1,-1,3];

function sx_replacer(str, repl, regex, rebuild) {

// callback
        // arguments: matched string, match1, match2..., offset, string
        //
        return str.replace(regex, function(){
            var i, r, tmp = "";
            for (i = 0; r = rebuild[i]; i++) {
                tmp += (r == -1)? repl : ((typeof arguments[r] != "undefined")? arguments[r] : "");
            }
            return tmp;
        });
    }

alert(sx_replacer(str, "1", regex, rebuild));

Gruesse, Joachim