JavaScript equivalent to printf/String.Format

Question

I\'m looking for a good JavaScript equivalent of the C/PHP printf() or for C#/Java programmers, String.Format() (IFormatProvider for .

Answer 1

For use with jQuery.ajax() success functions. Pass only a single argument and string replace with the properties of that object as {propertyName}:

String.prototype.format = function () {
    var formatted = this;
    for (var prop in arguments[0]) {
        var regexp = new RegExp('\\{' + prop + '\\}', 'gi');
        formatted = formatted.replace(regexp, arguments[0][prop]);
    }
    return formatted;
};

Example:

var userInfo = ("Email: {Email} - Phone: {Phone}").format({ Email: "someone@somewhere.com", Phone: "123-123-1234" });