Detecting key codes in JavaScript can be useful for a variety of purposes, such as creating custom keyboard shortcuts or creating interactive forms that respond to specific key presses.
To detect key codes in JavaScript, you can use the keydown event of the document object. This event is triggered whenever a key is pressed down, and it includes an event object that contains information about the key that was pressed. To access the key code of the pressed key, you can use the event.keyCode property.
You can also use the event.code property to detect specific keys, rather than just their key codes. This property returns a string representing the physical key that was pressed, and it is useful for detecting keys that have different key codes depending on the keyboard layout. It is also possible to detect key combinations, such as holding down the shift key while pressing another key. To do this, you can use the event.shiftKey property, which returns a boolean indicating whether the shift key was held down at the time of the key press.
Video Tutorial of How To Detect Key Code Using JavaScript
As you have seen on the given video tutorial of How to Detect key code using Html CSS and JavaScript, If you are feeling bored watching the given video tutorial of How to Detect key code using Html CSS and JavaScript then you can copy or download the given codes below:
How to Detect key code using Html CSS and JavaScript | Free Source Code
To create this program (Detect Key). First, you need to create three Files one HTML, CSS Files and another one is JavaScript File. After creating these files just paste the following codes in your file.
In the first place, make a HTML document with the name of index.html and paste the given codes in your HTML record. Keep in mind, you’ve to make a document with .html extension.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="./style.css">
<title>Detect Key using javascript</title>
<!-- S-Tech04 -->
</head>
<body>
<div class="insert">
<div class="key">Press any key to get Code</div>
</div>
<script src="./script.js"></script>
</body>
</html>
Second, make a CSS record with the name of style.css and paste the given codes in your CSS document. Keep in mind, you’ve to make a record with .css extension.
*
{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: sans-serif;
}
body
{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: #008cff;
}
.key
{
display: inline-flex;
justify-content: center;
align-items: center;
flex-direction: column;
font-size: 20px;
background: #f5f2f2;
border: 1px solid #000;
padding: 20px;
font-weight: bold;
position: relative;
margin: 20px;
min-width: 150px;
}
.key small
{
position: absolute;
top: -25px;
left: 0;
width: 100%;
font-size: 14px;
color: #000;
text-align: center;
}
last, create a JavaScript file with the name of script.js and paste the given codes in your JavaScript file. Remember, you’ve to create a file with .js extension.
const insert = document.querySelector('.insert');
window.addEventListener('keydown', (event)=>{
insert.innerHTML = `
<div class="key">
${event.key === " " ? "Space" : event.key}
<small>Event.key</small>
</div>
<div class="key">
${event.keyCode}
<small>Event.keyCode</small>
</div>
<div class="key">
${event.code}
<small>Event.Code</small>
</div>
`
})
That’s all, now you’ve successfully created a program to Detect key code using Html CSS and JavaScript. If your code doesn’t work or you’ve faced any error/problem, please download the source code files from the given download button. It’s free and a .zip file will be downloaded then you’ve to extract it.
Click on the following download button to download all source code files.
