A number between 0 and 100 is drawn when the page loads. Type a guess, and the page tells you whether the secret is higher or lower, until you land on it.
One script, no JavaScript library, no build step: open the file and play.
The whole game is two numbers. The secret and the attempt count live in two
variables at the top of js/devine.js. Every button reads or resets them;
nothing else holds state.
Guesses go through the form, not the button. The check button is a submit
button and the handler listens to the form's submit event, so pressing Enter
in the field plays a turn exactly as clicking does. preventDefault keeps the
page from reloading.
Bad input is refused before it counts. A number field still lets an empty
value, a decimal or a value outside 0 to 100 through. lireSaisie rejects
those and shows a message; the attempt counter only moves on a real guess.
Two lines, two jobs. The red line is for hints and refusals, the green one for the attempt count and the win. Asking for the count leaves the current hint in place, so you can read both at once.
Winning locks the field until you reset. Once the number is found, the field and the check button are disabled. Reset draws a new secret, clears both lines, re-enables everything and puts the cursor back in the field.
Open index.html in a browser. There is nothing to install.
HTML, CSS with Bootstrap 5.1 for the grid and the form controls, and vanilla JavaScript. One script, no JavaScript library.
Jeu de devinette en JavaScript sans dépendance : la page tire un nombre entre
0 et 100 au chargement, et chaque proposition reçoit un indice, trop petit ou
trop grand, jusqu'à ce que le nombre soit trouvé. L'état tient en deux
variables, le nombre secret et le compte des essais. Le formulaire écoute
l'événement submit, ce qui fait jouer la touche Entrée comme le bouton. Une
saisie vide, décimale ou hors bornes est refusée avant d'être comptée. Deux
lignes se partagent l'affichage, l'une pour les indices et les refus, l'autre
pour le compteur et la victoire ; consulter le compteur laisse l'indice en
place. La victoire verrouille le champ jusqu'à la réinitialisation, qui tire
un nouveau nombre et remet tout à zéro.
MIT. See LICENSE.