/*

A demonstration of contexts when invoking methods

*/

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this.name = "GLOBALNAME";

​

var method = function(phrase){

  console.log( phrase+", "+this.name );

};

​

var obj = {

  name: "objectname",

  greet: method

};

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// if we call the method as a function, the global context will be used.

method("good evening"); // "good evening, GLOBALNAME"

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// calling a method on an object will use that object as context:

obj.greet("hello"); // "hello, objectname"

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// we can also use call to temporarily change the context

method.call(obj,"enchanté"); // "enchanté, objectname"

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// or apply, which is the same but supplies all arguments in an array

method.apply(obj,["hi"]); // "hi, objectname"

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// we could also use call/apply directly on the object method:

obj.greet.call({name:"tempname"},"a pleasure"); // "a pleasure, tempname"

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// by using bind we can forever change the context of a method:

method = method.bind(obj);

method("greetings"); // "greetings, objectname"

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// bind can also be used to "curry" the function:

method = method.bind(obj,"salutations");

method(); // "salutations, objectname"

​

​