Hernán Pérez


Press Enter Key Programmatically in Javascript

In this tutorial, you will learn how to press enter key programmatically in javascript. As a bonus, we will also cover how to trigger Enter + Shift keypress programmatically in javascript. To press enter key programmatically in javascript we create 2 files HTML and JavaScript


  • We have 3 elements in the HTML file (div, button, and h1). The div element is just a wrapper for the rest of the elements.
  • We have centered align the content by using the style attribute on the div element.
  • We have also included our javascript file script.js with a script tag at the bottom.
<!DOCTYPE html>
<html lang="en">

    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">

    <div style="text-align: center;">
        <button>Trigger Enter Keypress</button>

    <script src="script.js"></script>




  • We have selected 2 elements (button and h1) using the document.querySelector() method and stored them in btn and result variables.
  • We have attached the keydown event listener to the body element. The event object contains key and shiftKey properties.
  • If the key property of the event object is equal to “Enter”, we will display “Enter Key Pressed” in the h1 element.
  • If the above condition is met and also shift key is pressed simultaneously which we will identify when shiftKey is equal to true, we will display “Enter + Shift Key Pressed” in the h1 element.
  • We have attached the click event listener to the button element.
  • Inside the click event handler function, we are creating 2 keydown events using the KeyboardEvent constructor. The constructor takes 2 parameters and the second parameter is optional.  Please create one event at a time and comment out the other one as shown in the code below.
  • For both keydown events, we have passed “keydown” to the first parameter and the second parameter is an object with a key property that is equal to “Enter”.
  • In the second event, we have additional shiftKey property which is equal to true. Use this only, if you want to trigger Shift + Enter keypress.
  • We are using document.document.body.dispatchEvent() to dispatch keyboard event to the body element.
let btn = document.querySelector("button");
let result = document.querySelector("h1");

document.body.addEventListener("keydown", (e) => {
  if (e.key == "Enter") {
    result.innerText = "Enter Key Pressed";

  if (e.key == "Enter" && e.shiftKey) {
    result.innerText = "Enter + Shift Key Pressed";

btn.addEventListener("click", () => {
  //Trigger Eneter key Press
  const keyEvent = new KeyboardEvent("keydown", { key: "Enter"});
  //Trigger Eneter + Shift key Press
  // const keyEvent = new KeyboardEvent("keydown", { key: "Enter", shiftKey: true });


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Press Enter Key Programmatically in Javascript

Rahul Jangid


What is JavaScript - Stackfindover - Blog

Who invented JavaScript, how it works, as we have given information about Programming language in our previous article ( What is PHP ), but today we will talk about what is JavaScript, why JavaScript is used The Answers to all such questions and much other information about JavaScript, you are going to get here today. Hope this information will work for you.

Who invented JavaScript?

JavaScript language was invented by Brendan Eich in 1995. JavaScript is inspired by Java Programming Language. The first name of JavaScript was Mocha which was named by Marc Andreessen, Marc Andreessen is the founder of Netscape and in the same year Mocha was renamed LiveScript, and later in December 1995, it was renamed JavaScript which is still in trend.

What is JavaScript?

JavaScript is a client-side scripting language used with HTML (Hypertext Markup Language). JavaScript is an Interpreted / Oriented language called JS in programming language JavaScript code can be run on any normal web browser. To run the code of JavaScript, we have to enable JavaScript of Web Browser. But some web browsers already have JavaScript enabled.

Today almost all websites are using it as web technology, mind is that there is maximum scope in JavaScript in the coming time, so if you want to become a programmer, then you can be very beneficial to learn JavaScript.

JavaScript Hello World Program

In JavaScript, ‘document.write‘ is used to represent a string on a browser.

<script type="text/javascript">
	document.write("Hello World!");

How to comment JavaScript code?

  • For single line comment in JavaScript we have to use // (double slashes)
  • For multiple line comments we have to use / * – – * /
<script type="text/javascript">

//single line comment

/* document.write("Hello"); */


Advantages and Disadvantages of JavaScript

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The essential JavaScript concepts that you should understand

As a JavaScript developer of any level, you need to understand its foundational concepts and some of the new ideas that help us developing code. In this article, we are going to review 16 basic concepts. So without further ado, let’s get to it.

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Detect Enter Key Press in JavaScript

Detect Enter Key Press in JavaScript

In this tutorial, you will learn how to create detect pressed key javascript. This type of project will basically help you to know which key has been pressed on the keyboard.

detect enter key design can be seen in many large applications. If you want to create a project where the user needs to show the key entered. Then you can use this kind of design.

Detect Pressed key JavaScript

When you click a button on the keyboard, that key, key code can be seen here. If you do not understand what I am saying then you can see the preview below. 

From here you will get a live preview and source code of this project (Detect Enter Key Press in JavaScript).

As you can see we have created a box at the top of a web page. When you press a key on your keyboard. Then all the information in the box can be seen.

How to Detect enter key in Javascript

Here you will find complete information and step-by-step tutorials. But to make this detect enter key project you need to have an idea about HTML, CSS, and javascript.

Below the article is a section on copying code. There is also a button to download the source code.

Step 1: Basic area of the project

First I created a box at the top of the web page in which all the information can be found. I have used blue color in the background of the web page and light white color has been used in the background of the box. 

<div class=”container”>
* {
box-sizing: border-box;
margin: 0;
padding: 0;
font-family: “Montserrat”, sans-serif;
body {
display: flex;
justify-content: center;
align-items: center;
text-align: center;
min-height: 100vh;
background: #1276d1; /* fallback for old browsers */
.container {
display: flex;
width: 400px;
flex-direction: column;
padding: 2rem;
background: rgba(255, 255, 255, 0.25);
box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
backdrop-filter: blur(4px);
-webkit-backdrop-filter: blur(4px);
border-radius: 10px;
border: 1px solid rgba(255, 255, 255, 0.18);

Basic area of the project

Step 2: Display the view of the pressed key

Now another small box has been created in that box in which key-related information can be found. This means that what you press on your keyboard can be seen in that box.

<div class=”key-container”>
   <p>Press any key</p>
.key-container {
display: inline-flex;
font-size: 22px;
flex-direction: column;
font-weight: bold;
padding: 20px;
position: relative;
color: #333;
margin: 2.5rem;
min-width: 150px;
background: white;
box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
backdrop-filter: blur(2.5px);
-webkit-backdrop-filter: blur(2.5px);
border-radius: 10px;
border: 1px solid rgba(255, 255, 255, 0.18);

Display the view of the pressed key

Step 3: Activate detect pressed key with JavaScript

Now you need to activate it with JavaScript. Very simple JavaScript has been used for this. Here I have tried to explain as much as possible. As a result, you will not have any difficulty in making detect enter key javascript.

//A constant of the basic box has been determined
const container = document.querySelector(“.container”);
//The keydown event is fired when a key is pressed. 
window.addEventListener(“keydown”, (e) => {
//console. log(e) method is used for writing a message in the console
//innerHTML property is part of the Document Object Model (DOM)
  container.innerHTML = 
    `<div class=”key-container”><h4>Key</h4>${
      e.key === ” ” ? “Space” : e.key
    }</div> <div class=”key-container”><h4>Code</h4>${
    }</div><div class=”key-container”><h4>Key Code</h4>${e.keyCode}</div>`;

detect pressed key with JavaScript

The h4 tag has been designed using some of the following CSS. We have used this h4 tag in JavaScript.

.key-container h4 {
color: #333;
position: absolute;
top: -2rem;
right: 0px;
text-align: center;
width: 100%;

how to detect enter key in javascript

Detect enter key Javascript (Source Code)

Hopefully, you can create this project (how to detect a keypress in javascript) using the code above. However, many will not be able to assemble all the codes together. 

I have given the following code section for them. You create an HTML file and add all the code to that file.

Here’s another way to make this javascript detect enter keypress. Below is a download button. If you do not have any technical knowledge then you can use the download button below. 

Please comment on how you like this project (detect enter key in javascript). If there is a problem, I could not let me know directly on Instagram.

Original article source at: https://foolishdeveloper.com

#javascript #detect #enter 

Ajay Kapoor


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