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HTML

CSS

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JavaScript

Babel includes JSX processing.

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HTML

              
                <!DOCTYPE html>
<html>
    <head>
        <title>Cours JavaScript</title>
        <meta charset="utf-8">
        <link rel="stylesheet" href="cours.css">
        <script src='cours.js' async></script>
    </head>
    
    <body>
        <h1>Titre principal</h1>
        <p id='p0'></p>
        
        <p id='p1'></p>
        <p id='p2'></p>
        <p id='p3'></p>
    </body>
</html>

              
            
!

CSS

              
                
              
            
!

JS

              
                let chaine = 'Bonjour, je suis Pierre a^$b. Mon no. est le [06-36-65-65-65]';
let masque1 = /^./g; //N'importe quel caractère en début de chaine sauf \n
let masque2 = /^[A-Z]/g; //Une majuscule en début de chaine
let masque3 = /.$/g; //N'importe quel caractère en fin de chaine sauf \n
let masque4 = /a\^\$b/g; //"a^$b" dans la chaine
let masque5 = /[e$]/g; //"e" ou "$" dans la chaine
let masque6 = /^[^a-z]/g; //Autre chose qu'une minuscule en début de chaine
let masque7 = /^...$/; //Trois caractères excactement sans retour à la ligne

let p0 = document.getElementById('p0');
let p1 = document.getElementById('p1');


p0.textContent = chaine;
p1.innerHTML =
    'Résultat masque 1 : ' +  chaine.match(masque1) +
    '<br>Résultat masque 2 : ' +  chaine.match(masque2) +
    '<br>Résultat masque 3 : ' +  chaine.match(masque3) +
    '<br>Résultat masque 4 : ' +  chaine.match(masque4) +
    '<br>Résultat masque 5 : ' +  chaine.match(masque5) +
    '<br>Résultat masque 6 : ' +  chaine.match(masque6) +
    '<br>Résultat masque 7 : ' +  chaine.match(masque7);
    
              
            
!
999px

Console