javascript calling a function code example
Example 1: javascript function call with variable
function abc() {
alert('test');
}
var funcName = 'abc';
window[funcName]();
Example 2: how to call a function in JavaScript
// calling our function
displayGreeting();
Example 3: Functions call functions js
/*
Write a function sum that takes an array of numbers and
returns the sum of these numbers.
Write a function mean that takes an array of numbers and
returns the average of these numbers.
The mean function should use the sum function.
*/
function sum (arr) {
let suma = 0;
for (let i = 0; i < arr.length; i++) {
let num= parseInt(arr[i]);
suma += num;
}
return suma;
}
function mean (arr) {
let average = sum(arr) /arr.length;
return average;
}
Example 4: call function javascript
// Define your function
function sayHello(msg){
console.log("Hello, " + msg);
}
// Call it
sayHello("Norris");
// outputs:
// Hello, Norris