In this article, the task is to execute the functions in the order defined in the queue with the help of JavaScript. There are two approaches that are discussed below.
Approach 1: Declare the functions and use the array push() method to push the functions in the array. Later traverse the array and execute the functions one by one.
Example: This example implements the above approach.
Javascript
function myGFG() { // First function function function1() { console.log("First Function"); } // Second function function function2() { console.log("Second Function"); } let orderQueue = []; // Push them in queue orderQueue.push(function1); orderQueue.push(function2); while (orderQueue.length > 0) { // Execute in order orderQueue.shift()(); } console.log("Functions executed in queue order");}myGFG(); |
Output
First Function Second Function Functions executed in queue order
Approach 2: Declare the functions and use array indexing to assign the functions to index of the array in the order. Later traverse the array and execute the functions one by one.
Example: This example implements the above approach.
Javascript
function myGFG() { // First function function function1() { console.log("First Function"); } // Second function function function2() { console.log("Second Function"); } let functions = new Array(); // Adding the functions in the order // in queue(array) functions[0] = function1; functions[1] = function2; for (let i = 0; i < functions.length; i++) { // Executing them in order. functions[i].call(); } console.log("Functions executed in queue order");}myGFG(); |
Output
First Function Second Function Functions executed in queue order
