Topic: Message Format

/**
* The following function will help to format messages in the client side.
* Usage:
* var s = "My name is {0}.\n\rI like {1}";
* alert(MessageFormat(s,"Yossi","JavaScript"));
*/
function StringFormatter(){
}
StringFormatter.prototype.format = function(str) {
    var i = 1;
    while(i < arguments.length){
        var delimiter = "{" + (i-1) + "}";
        var pos = str.indexOf(delimiter);
        if(pos > -1){
            var s = str.substring(0, pos) + arguments[i];
            str = s + str.substring(pos + delimiter.length, str.length);
        }
        i++;
    }
    return str;
}
var MessageFormat = new StringFormatter();

StringFormatter.prototype.format = function( str )
{
    var i=0;
    while( ++i<arguments.length )
        str = str.replace( new RegExp( '{'+(i-1)+'}', 'g' ), arguments[i] );
    return str;
}

var s = "His name is {0}.\n\rHe likes {1}.\n\r{2} also like {1}.";
alert( MessageFormat.format(s,"Yossi","JavaScript","p01"));