Function.createDelegate

function greet(message) { alert(message + ", " + this.name); } var instance = { name: "fred" }; //when you create a delegate, "this" in the delegate function body //refer to the instance passed in var greetSomeone = Function.createDelegate(instance, greet); greetSomeone("hello"); /* Function.createDelegate = function Function$createDelegate(instance, method) { /// <summary locid="M:J#Function.createDelegate" /> /// <param name="instance" mayBeNull="true"></param> /// <param name="method" type="Function"></param> /// <returns type="Function"></returns> var e = Function._validateParams(arguments, [ { name: "instance", mayBeNull: true }, { name: "method", type: Function } ]); if (e) throw e; return function() { return method.apply(instance, arguments); } }