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JavaScript is a scripts programming language, intended for interactive Web pages and for App. Web too, created in 1995. JavaScript is an object oriented language, known as prototype.

BEGINNER

⇒ Code Examples

→ You must be bilingual (Fr/En). Code examples are in English.

→ Let's start with very simple codes. The more you progress, page after page, the more sophisticated the scripts will be. However, you must go over 30 to 40 pages per level, before moving on to the next step...

→ In order to evaluate your codes, click on the icon on the left at the bottom of the page (gears), then choose a compiler from the list that will be open in another tab. Finally, test your work.

NOW REPRODUCE AND IMMERSE YOURSELF!

C 0001 - Hello World !
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Exemple</h2>
<p id="example1">JavaScript can change content</p>
<button type="button" onclick='document.getElementById("example1").innerHTML = "Hello World !";'>Click here !</button>
</body>
</html>
C 0002 - List
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Array methods using JavaScript</h2>
<h2>join()</h2>
<p>The join () method joins the array elements into a string.</p>
<p>In this example, "/" acts as a separator between the elements presented :</p>
<p id="demo"></p>
<script>const painters = ["Vermeer", "Picasso", "Leonardo da Vinci", "Vincent van Gogh"];document.getElementById("demo").innerHTML = painters.join(" / ");</script>
</body>
</html>
C 0003 - PopUp
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>POPUP</h2>
<p>Example</p>
<script>window.alert(189 + 3454);
</script>
</body>
</html>
C 0004 - Data Comparison
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Compare two data for your retirement</h2>
<p>Indicate your age :</p>
<input id="age" value="67" />
<button onclick="myFunction()">Compare</button>
<p id="demo"></p>
<script>function myFunction() {  let age = document.getElementById("age").value;  let see = (age < 67) ? "Too young ":"Old enough ";  document.getElementById("demo").innerHTML = see + "to retire.";}</script></body>
</html>
C 0005 - Data Types
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Evaluation</h2>
<p id="comp"></p>
<script>
let x = 6 + 28 + "Orange" + "Paris" ;
document.getElementById("comp").innerHTML = x;
</script>
</body>
</html>

C 0006 - Data Types
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Evaluation</h2>
<p id="comp"></p>
<script>
let x = 134 + "Blue" + 272 + "Orange" + "London" ;
document.getElementById("comp").innerHTML = x;
</script>
</body>
</html>

C 0007 - Data Types
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>Evaluation</h2>
<p id="comp"></p>
<script>
let x = 134 + " Blue" + 272 + " Orange" + " London" ;
document.getElementById("comp").innerHTML = x;
</script>
</body>
</html>

C 0008 - PopUp
Reproduce this code (do not copy and paste!).

<!DOCTYPE html>
<html>
<body>
<h2>POPUP</h2>
<p>Example</p>
<script>window.alert(888 + 2023);
</script>
</body>
</html>
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CHOOSE YOUR COMPILER

Reproduce this code, choosing one of the compilers below (don't copy and paste! It would be too easy). They all have the same function, just choose one according to your preferences.

When copying your code, replace the existing (default) code already in the compiler with your own.

Warning! For some of these compilers, you must choose the programming language yourself from the menu that is then offered. Of course, don't forget to click on RUN!

Code

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Tools/Methodologies

Info+

» Creation date: 1995
* Created by Brendan Eich
* Developed and supported by ECMAScript, Netscape Communications Corporation, Mozilla Foundation
* Influenced by Java, C ++, PERL and Python
* Multiplatform

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