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This article mainly explains "how to use the call () method of JavaScript". The content of the explanation in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn how to use the call () method of JavaScript.

The call () method is a predefined JavaScript method.

It can be used to call a method with the owner object as a parameter.

With call (), you can use methods that belong to another object.

This example calls the fullName method of person and is used for person1:

Example

Var person = {

FullName: function () {

Return this.firstName + "" + this.lastName

}

}

Var person1 = {

FirstName: "Bill"

LastName: "Gates"

}

Var person2 = {

FirstName: "Steve"

LastName: "Jobs"

}

Person.fullName.call (person1); / / will return "Bill Gates"

This example calls the fullName method of person and is used for person2:

Example

Var person = {

FullName: function () {

Return this.firstName + "" + this.lastName

}

}

Var person1 = {

FirstName: "John"

LastName: "Doe"

}

Var person2 = {

FirstName: "Mary"

LastName: "Doe"

}

Person.fullName.call (person2); / / will return "Steve Jobs"

Call () method with parameters

The call () method accepts parameters:

Example

Var person = {

FullName: function (city, country) {

Return this.firstName + "+ this.lastName +", "+ city +", "+ country"

}

}

Var person1 = {

FirstName: "Bill"

LastName: "Gates"

}

Person.fullName.call (person1, "Seattle", "USA").

Thank you for reading, the above is the content of "how to use the call () method of JavaScript". After the study of this article, I believe you have a deeper understanding of how to use the call () method of JavaScript, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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