A small JS {string} parser

JS_Parser.js

function parse(template, data) {
    var replacer = function (context) {
        return function (placeholder, name) {
            return context[name];
        };
    };

    return template.replace(/\{(\w+)\}/g, replacer(data));
}

//
// Usage
var template = "Hello, {what}!";
var data = {"what": "World"};

console.log(parse(template, data));

Found somewhere on the net.