String functions

string.js

/* 
var s = "Replace {foo}";
var o = { foo: "this"};
var result = s.interpolate(o);
console.log(result);
// Replace this
*/
String.prototype.interpolate = function (o) {
    return this.replace(/{([^{}]*)}/g, function (a, b) {
        var r = o[b];
        return typeof r === 'string' || typeof r === 'number' ? r : a;
    });
};

String.prototype.stripCommas = function() {
    var value = this;

    while (value.indexOf(",") != -1) {
        value = value.replace(",", "");
    }

    return value;
};

String.prototype.ellipsise = function (position) {
    if (position == null || this == null || this.length <= position)
        return String(this);
    
    return this.substring(0, position) + '...';
};

String.prototype.replace(value, newvalue)
{
    while (value.indexOf(this, 0) != -1)
    {
        value = value.replace(this, newvalue);
    }

    return value;
};

String.prototype.replaceBreaks()
{
    return this.replace("<br />", "\n");
}

String.prototype.replaceLineBreaks(value)
{
    return this.replace("\n", "<br />");
}