How to call functions that are members of an object?
I want to call a function that is an attribute of an object. For example, consider the code
var obj={
a:"One",
b:"two",
c:'three',
d:function f(){
console.log("Hello World");
}
}
I want to call function f. How should I do it? I tried google but I can't find it anywhere, I may be phrasing the question wrong.
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Consider an example
var fun=function(){
console.log("Hello");
}
We can call the function via fun()
In your example
var obj={
a:"One",
b:"two",
c:'three',
d:function f(){
console.log("Hello World");
}
}
You can use the d () function to call the function. But since it is a member of obj. We can access it by accessing obj. Therefore, we could use
obj.d()
or
(obj.d)()
Alternatively, you can assign it to another variable.
var fu=obj.d;
fu();
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Just call the key that contains the function.
obj.d();
var obj = {
a: "One",
b: "two",
c: 'three',
d: function f() {
console.log("Hello World");
}
}
obj.d();
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You can get any value from an object using the notation .(dot)
. since d has a function f, you call withobj.d()
var obj={
a:"One",
b:"two",
c:'three',
d:function f(){
console.log("Hello World");
}
}
obj.d();
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In JavaScript, you can define a function as a method of an object.
The following example creates an object (myObject) with two properties (firstName and lastName) and a method (fullName):
Example:
var myObject = {
firstName:"John",
lastName: "Doe",
fullName: function () {
return this.firstName + " " + this.lastName;
}
}
myObject.fullName (); // Returns "John Doe"
So
var myObject=obj.d;
myObject();
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