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    In JavaScript, the call() method allows you to invoke (call) a method with an owner object as an argument (parameter). This means you can call a function defined in one object and use it in the context of another object.

    Here's a simple example:

    const person = {
    fullName: function() {
    return this.firstName + " " + this.lastName;
    }
    }

    const person1 = {
    firstName:"John",
    lastName: "Doe"
    }

    // This will return "John Doe":
    person.fullName.call(person1);
    Gekopieerd.

    Using call() with Arguments

    The call() method can also accept arguments which are passed after the first thisArg parameter.

    const person = {
    fullName: function(city, country) {
    return this.firstName + " " + this.lastName + "," + city + "," + country;
    }
    }

    const person1 = {
    firstName:"John",
    lastName: "Doe"
    }

    // This will return "John Doe,Oslo,Norway":
    person.fullName.call(person1, "Oslo", "Norway");
    Gekopieerd.

    Understanding this in call()

    The value of this inside the function is determined by call(). If the function is not in strict mode, null and undefined will be replaced with the global object, and primitive values will be boxed.

    Where can a function be called in JavaScript?
    When using the function keyword, the function gets hoisted to the top of the scope and can be called from anywhere inside the outer function. The following example shows how we can call the inner function before it is declared. This is because of how hoisting works in JavaScript.
    bobbyhadz.com
    Stack Overflow
    https://stackoverflow.com/questions/4524877
    javascript - How do I call a function inside of another function ...
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  3. GeeksForGeeks
    https://www.geeksforgeeks.org › javascript › how-to...Dit resultaat vertalen

    How to call a function that return another function in JavaScript ?

    12 jul. 2025 · The task is to call a function that returns another function with the help of JavaScript is called a Currying function, a function with numerous arguments that can be converted into a series of …

  4. Stack Overflow
    https://stackoverflow.com › questionsDit resultaat vertalen

    javascript - How do I call a function inside of another function ...

    A little bit more context: this works in JavaScript because of a language feature called "variable hoisting" - basically, think of it like variable/function declarations are put at the top of the scope (more info).

    Codevoorbeeld

    function function_one() {
      function_two();
      alert("The function called 'function_one' has been called.");
    }
    function function_two() {...
  5. W3School
    https://www.w3schools.com › Js › js_function_call.aspDit resultaat vertalen

    JavaScript Function call () Method - W3Schools

    Basic call () Syntax The call () method is used to call a function with an object as an argument. The call () method takes this as the first argument. Additional arguments are passed as a comma-separated list.

  6. Mozilla Developer
    https://developer.mozilla.org › ... › Function › callDit resultaat vertalen

    Function.prototype.call () - JavaScript - MDN

    10 jul. 2025 · With call(), you can assign an arbitrary value as this when calling an existing function, without first attaching the function to the object as a property. This allows you to use methods of one …

  7. tutorialreference.com
    https://tutorialreference.com › javascript › examples › ...Dit resultaat vertalen

    How to Call a Function from Another Function in JavaScript

    Understanding how to call a function from within another is a fundamental concept for building structured and reusable code. This guide will explain the two primary ways functions interact: direct …

  8. TutorialsPoint
    https://www.tutorialspoint.com › article › how-to-call...Dit resultaat vertalen

    How to call a function that returns another function in JavaScript?

    In JavaScript, calling a function that returns another function involves understanding higher-order functions and closures. When a function returns another function, you can either store the returned …

  9. w3tutorials.net
    https://www.w3tutorials.net › blog › run-a-function...Dit resultaat vertalen

    How to Run a Function When Another Function is Called in JavaScript ...

    16 jan. 2026 · Unlike DOM events, there’s no built-in “function call event” in JavaScript, so we need alternative approaches. In this blog, we’ll explore **four practical methods** to run a function when …

  10. bobbyhadz
    https://bobbyhadz.com › blog › javascript-call...Dit resultaat vertalen

    How to call a Function inside another Function in JS

    4 mrt. 2024 · To call a function inside another function, define the inner function inside the outer function and invoke it. When using the function keyword, the …

  11. DEV Community
    https://dev.to › possibility_mayfairDit resultaat vertalen

    Call Function in Another Function Javascript - DEV …

    12 jan. 2024 · In this example, calling a function within another function is a common practice in JavaScript, especially when you want to reuse functionality or …

  12. JavaScript Tutorial
    https://www.javascripttutorial.net › javascript-call-functionDit resultaat vertalen

    JavaScript call () Method and Its Practical Applications

    In this tutorial, you will learn about the JavaScript call () method and how to apply it in various contexts.

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