JavaScript supplants

supplant.js

/* Supplant for templates and data filling */

if(typeof String.prototype.supplant !== 'function') {
	String.prototype.supplant = function(o) {
		return this.replace(/{([^{}]*)}/g,
			function (a,b) {
				var r = o[b];
				return typeof r === 'string' ?
					r : a;
			});
	};
}

/* You need a template and data */

template = "this is {data}  "
data = {"data" : "value"}
result = template.supplant(data);

/* Result will be "this is value" */