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Explanation of how you can call a function outside of an Object

We can be quite limited to storing functions inside an object, especially, if the function contains a lot of codes to run. The following code snippet shows the problem:

var myObj = {

sayHi: function(){




In the example above, all the function contents must be added inside the function code block, which can cause your object to store an unusually long code (considering that you have a lot of codes to run inside a function). A solution around this is to store a reference to the function you want to call inside an object key without the parentheses, so it will only be called once you want to call it. For example:

var myObj = {

myFunc: runFunc //Omit the parenthese after function name


function runFunc() {



// Now the function is separate from the object and makes your codes more readable.

To call the function, access the object and the key that holds the function followed with parentheses, for example:

myObj.myFunc() //Add the parentheses to tell the interpreter to run the function