how to call a function javascript

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Elmustafa Eldaw answered on April 19, 2021 Popularity 10/10 Helpfulness 2/10

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how to call a function javascript

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//  we create a function by typing the keyword " function" + Function's name and ( we add the parameter here )
// {
//     the function body 
// }

// we call the function by typing it's name without the keyword and we add ()

function second (name){ 
    name = "Elmustafa";
    alert(name);
}

first();

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Contributed on May 10 2022

Elmustafa Eldaw

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javascript call a function in a function

Comment

function one(){
	console.log('this is function one');
}

function two(){
	one();
}

two();

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Source: Grepper

Tags: call

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Contributed on Nov 21 2022

Adam, the developer

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js create and call function

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// Create a function (you decide the name) that logs out the number 42 
// to the console

// Call/invoke the function

 function number(){
     console.log(42)
 }
 
 number()
//result = 42

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Source: scrimba.com

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Contributed on Jun 05 2021

tusks

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javascript call()

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const personOne = {
  firstName : "Elon",
  secondName : "Musk"
}

const getFullName = function(company, country) {
  console.log(this.firstName + " " + this.secondName + ", " + company + ", " + country);
}

const personTwo = {
  firstName : "Mark",
  secondName : "Zuckerburg"
}

getFullName.call(personOne, "Tesla", "United States");    // outputs Elon Musk, Tesla, United States
getFullName.call(personTwo, "Facebook", "United States");    // outputs Mark Zuckerberg, Facebook, United States

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Source: workat.tech

Tags: javascript j

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Contributed on May 06 2022

sani sahani

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how to call a function in JavaScript

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// calling our function
displayGreeting();

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Source: github.com

Tags: call

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Contributed on Apr 19 2021

Defeated Deer

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FunctionName.call(Object/function whose values you want to use as arguments for the 'this' in a function, arg1, arg2, ...argN), if your function needs to receive arguments, pass the arguments in place of ...arg.

const car = {
  name: 'car',
  start() {
    console.log('Start the ' + this.name);
  },
  speedUp() {
    console.log('Speed up the ' + this.name);
  },
  stop() {
    console.log('Stop the ' + this.name);
  },
};

const aircraft = {
  name: 'aircraft',
  fly() {
    console.log('Fly');
  },
};

car.start.call(aircraft);
car.speedUp.call(aircraft);
aircraft.fly();

/*
	// Outputs
    	Start the aircraft
        Speed up the aircraft
        Fly
*/

// With love @kouqhar

By default, the this inside the function is set to the global object i.e. window in the web browsers and global in Nodejs.

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Source: www.javascripttutorial.net

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Contributed on Apr 18 2023

kouqhar

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javascript call

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function myFunc(p1, p2, pN)
{
     // here "this" will equal "myThis"
}
let myThis = {};

// call myFunc using myThis as context.
// pass params to function arguments.
myFunc.call(myThis, "param1", "param2", "paramN");

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Contributed on May 12 2021

TechNyquist

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JavaScript Function call()

Comment

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

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

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Contributed on May 23 2022

naly moslih

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The JavaScript call() Method

Comment

		const person = {
name: "John Smith",
getNameAndAddress: function(city, country)
{
return this.name+city+country;
}

}
const personWithoutGet = {
name: "Jerry Smithers"}

 console.log(person.getNameAndAddress.call(personWithoutGet, 'Berlin','Germany'));
/*you can think of bind(), apply() and call() ALL as "stealing someone else's function to use."*/
/* victimBeingStolenFrom.functionName.call(theThief) */
/*notice the second variable personWithoutGet does not have a getName function*/

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Contributed on Jun 19 2022

Javasper

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javascript call example

Comment

l = "abcder";
q = "Ererwrwrewrew";
console.log(String.prototype.substr.call(q, 1, 4))
/*rerw...4 refers to how many characters to substring*/

Popularity 9/10 Helpfulness 1/10 Language javascript

Source: Grepper

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Contributed on Aug 04 2022

Javasper

0 Answers Avg Quality 2/10

how to call a function javascript

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