JavaScript
JS is a part of web page that’s defines all the action perform on the web pages.
JS is a programming language with oop concepts.
JS is simple and easily compatible with HTML And CSS.
HISTORY
JS was founded by BRENDEN EICH
He developed JS in1995.
TOOLS
To work with JS we need two Tools:-
. Text-editor :- Where we write the JavaScript code.
. Browser :- Where our code is execute.
JavaScript First Code
Here we write the first code of JS where we print the ” HELLO WORLD”.
we print the word in console so to do this we have to open the console of the we page
to open the console just press ” ctrl + shift + i”.
After that console is open we have to write JS code in the console to print the word
CODE :-
console.log(“HELLO WORLD”);
console.log is use to print output.
Adding JS to HTML Page
We add JS in HTML through 2 way :-
- By adding script tag in the HTML page where the body tag is closing
Ex –
<!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">
<title>Document</title>
</head>
<body>
<button class="btn">submit</button>
</body>
<script>
console.log("HELLO WORLD");
</script>
</html>
2. By including the JS file or folder where we write the JS code.
Ex- By providing the source of the file or path .
<!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">
<title>Document</title>
</head>
<script src="inc.js"></script>
<body>
<button class="btn">submit</button>
</body>
</html>
THANKU 🙂