Develop Reference

My JavaScript console game is not working

This is my first time asking a question here, so pardon if it has an error/is less descriptive.
Actually, I am a beginner in JavaScript, and while making a console guess game, there is just nothing in the output window(it supports alert and prompt boxes). Here's the code:
function runGame() {
Boolean isPlaying = true;
var tries = 3;
var guess = 0;
var randInt = Math.floor(Math.random(10) * 1);
alert("You have 3 chances to guess a number between 1 & 10!");
while (guess != randInt && tries > 0) {
guess = prompt("Enter a guess between 1 & 10: ");
if (guess > randInt) {
tries--;
alert("Too high!");
} else if (guess < randInt) {
tries--;
alert("Too low!");
} else {
alert("Exactly! " + randInt + " it is! You've won!");
}
}
if (tries < 1) {
isPlaying = false;
}
}
while (isPlaying == true) {
runGame();
}

Moved your while isPlaying to the inside while loop. A while loop with a function inside will just call that function over and over again.
Math.random(10) only changes the seed, it does not choose between 1-10.
function runGame() {
var isPlaying = true;
var tries = 3;
var guess = 0;
var randInt = Math.floor(Math.random() * 10);
alert("You have 3 chances to guess a number between 1 & 10!");
while (guess != randInt && tries > 0 && isPlaying) {
guess = prompt("Enter a guess between 1 & 10: ");
if (guess > randInt) {
tries--;
alert("Too high!");
} else if (guess < randInt) {
tries--;
alert("Too low!");
} else {
alert("Exactly! " + randInt + " it is! You've won!");
}
}
if (tries < 1) {
isPlaying = false;
}
}
runGame()

Javascript won't display message

I'm trying to create a simple program where a user needs to pick a maximum number, then try to guess a number between 1 and that maximum number. When they enter their guess, I need to validate the input, and offer a choice of feedback: different messages if it's (1) not a number, (2) a number not within the range, (3) the correct guess, (4) too high, but within range, and (5) too low, but within range.
function do_guess(prompt) {
let valid_input = false;
let guess = Number(document.getElementById("guess").value);
let message = document.getElementById("message");
while (!valid_input) {
input = window.prompt(prompt);
guess = Number(input);
if (isNaN(guess)) {
message.innerHTML = "That is not a number!";
} else if (guess < 1 || guess > val) {
// val = max_num - "I wasn't sure how to code this."
message.innerHTML = "That number is not in the range, try again.";
} else if (guess == num) {
valid_input = true;
message.innerHTML = "You got it!";
} else if (guess > num) {
message.innerHTML = "No, try a lower number.";
} else {
message.innerHTML = "No, try a higher number.";
}
}
}
do_guess("Number from 1 to 10")
Guess <input id="guess" value="" />
<div id="message"></div>

Based on your requirements, I'm loading the max_val from the input box and calling the do_guess function with a new button.
function do_guess(prompt) {
let valid_input = false;
let max_val = Number(document.getElementById("guess").value);
let message = document.getElementById("message");
let output = '';
let num = Math.floor((Math.random() * max_val) + 1);
prompt = prompt + max_val;
while (!valid_input) {
input = window.prompt(prompt + output);
let guess = Number(input);
if (isNaN(guess)) {
output = " That is not a number!";
} else if (guess < 1|| guess > max_val) {
output = " That number is not in the range, try again.";
} else if (guess == num) {
valid_input = true;
message.innerHTML = "You got it!";
} else if (guess > num) {
output = " No, try a lower number.";
} else {
output = " No, try a higher number.";
}
}
}
Max Guess <input id="guess" value="" />
<div id="message"></div>
<button onClick="javascript:do_guess('Number from 1 to ')">
Guess
</button>

Random Number Guessing Game - Limit the Number of guesses

I'm trying to make a program that generates a random number which the user guesses. It also limits the number of guesses the user can make (or is supposed to.)
var highLimit = 5;
var randNum = Math.floor((Math.random() * highLimit) + 1);
var allowedGuesses = 2;
var numGuesses = 0;
function guessingGame() {
if (numGuesses <= allowedGuesses) {
do {
inputNum = document.numForm.number.value;
inputNum = parseInt(inputNum);
if (inputNum < randNum && inputNum > 1) {
document.numForm.gameResults.value = "Sorry, your guess was too low.";
numGuesses++;
}
else if (inputNum > randNum && inputNum < highLimit) {
document.numForm.gameResults.value = "Sorry, your guess was too high.";
numGuesses++;
}
else if (inputNum == randNum) {
document.numForm.gameResults.value = "Congratulations! You guessed correctly.";
numGuesses++;
}
else {
document.numForm.gameResults.value = "Your guess was out of the desired parameters. Please guess again.";
numGuesses--;
}
} while(numGuesses < allowedGuesses && inputNum != randNum);
}
else {
document.numForm.gameResults.value = "Sorry, you have reached the allowed number of guesses, which is " + allowedGuesses + "." + " Click 'New Game' to try again.";
}
return false;
}
numGuesses = 0;
function newGame() {
randNum = Math.floor((Math.random() * highLimit) + 1);
guessingGame();
return false;
}
And the HTML:
<form name = "numForm">
<fieldset>
<label for = "randNum">Enter a number between 1 and 5: </label>
<input type = "text" name = "number" value = "" id = "randNum" size = "1" maxlength = "1" />
</fieldset>
<input class = "button" type = "button" name = "submit" onclick = "guessingGame()" value = "Submit Number" />
<input class = "button" type = "reset" name = "newGame" onclick = "newGame()" value = "New Game" />
<fieldset>
<textarea name = "gameResults" onclick = "" readonly = "true" value = "" rows = "5" cols = "40" ></textarea>
</fieldset>
</form>
Right now, the program is stuck in a infinite loop since highLimit is set at 5. But if I set it at ten, the program works. How can I fix it so it works at any value? I would also appreciate other suggestions for improvement.
Thanks in advance!

I think you don't need a loop in this one. You can simple say:
function guessingGame() {
if (numGuesses < 0){numGuesses=0;}
if ((numGuesses < allowedGuesses) && (inputNum != randNum)) {
inputNum = document.numForm.number.value;
inputNum = parseInt(inputNum);
if (inputNum < randNum && inputNum > 1) {
document.numForm.gameResults.value = "Sorry, your guess was too low.";
numGuesses++;
}
else if (inputNum > randNum && inputNum < highLimit) {
document.numForm.gameResults.value = "Sorry, your guess was too high.";
numGuesses++;
}
else if (inputNum == randNum) {
document.numForm.gameResults.value = "Congratulations! You guessed correctly.";
numGuesses++;
}
else {
document.numForm.gameResults.value = "Your guess was out of the desired parameters. Please guess again.";
numGuesses--;
}
}
else {
document.numForm.gameResults.value = "Sorry, you have reached the allowed number of guesses, which is " + allowedGuesses + "." + " Click 'New Game' to try again.";
}
return false;
}
the if (numGuesses < 0){numGuesses=0;} will help also. for negative cases.

This is an update for:
Ran the Snippet and answeared in "0 tries"
This is how I did it: But you're going to have to replace the 'prompts' and 'alerts' with your specified inputs and outputs, if you still need it after 4 years:
let maximum = parseInt(prompt('Enter the maximum number!') );
while(!maximum) {
maximum = parseInt (prompt('Please enter a valid number') )
}
const targetNum = Math.floor(Math.random()*maximum)+1;
let attempts =0;
let maxAttempts = Math.ceil(maximum/2);
// ==== Uncomment the line below to cheat --> ======
// console.log(targetNum)
let guess = parseInt(prompt(`Enter your first guess!, you have ${maxAttempts} attempts (press 'q' anytime to escape from this hellish nightmare)`));
while(parseInt(guess) !==targetNum && attempts < maxAttempts-1) {
if (typeof(guess) === 'string' && guess.toLowerCase() ==='q') {break;}
attempts++;
if(guess>targetNum) {
guess = (prompt(`Too High! Enter new guess! attempts left: ${maxAttempts- attempts} (press 'q' anytime to escape from this hellish nightmare)`))
}else {
guess= (prompt(`Too low! Entere a new Guess! attempts left: ${maxAttempts- attempts} (press 'q' anytime to escape from this hellish nightmare)`))
}
}
if(typeof(guess) === 'string' && guess.toLowerCase() ==='q') {
alert(`You gave up after ${attempts} attempts`);
}
else if(attempts >= maxAttempts-1) {alert(`Oops, your ${maxAttempts} attempts ran out, the number was ${targetNum}: Verification : ${targetNum==guess}`);}
else {
alert(`Good job, you got it ${attempts+1} attempts!, the number was ${targetNum}: Verification : ${targetNum==guess}`) ;
}

Simple Guessing Game Program in Javascript

Trying to create a very simple number guessing game as a first project. I want the player to have 5 guesses before they lose.
I'm having difficulty troubleshooting the bugs or coding mistakes.
var num = Math.floor((Math.random(1,10) * 10) +1);
console.log(num); //To check
var counter = 5;
while(counter > 0){
function guess(){
counter = counter-1
var guess = prompt("You've got " + counter + " tries to guess the number.");
if (num == guess){
alert("That's the number!");
}else if (guess != (int){
alert("That's not a number...");
}else{
alert("Nice try");
}
}
}
alert("You lost.");

Working fiddle: http://jsfiddle.net/0skh4t4r/
var num = Math.floor((Math.random(1, 10) * 10) + 1);
console.log(num); //To check
var counter = 5;
function guess() {
var x = prompt("You've got " + counter + " tries to guess the number.");
if (!x) return; // cancel the game
counter--;
if (num === parseInt(x)) {
alert("That's the number!");
return;
} else if (isNaN(x)) {
alert("That's not a number...");
} else {
alert("Nice try");
}
if(counter === 0) {
alert("You lost");
} else {
guess(); // next try
}
}
guess();

do while javascript - loop for guessing game

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<title>Game</title>
<script type="text/javascript" src="game.js"></script>
</head>
<body>
<h1>GameSite</h1>
<p> This program will generate a random number. Please input your guess in the box!</p>
<button onclick="guessGame()">Press me to play a quick game!</button>
<script>
function guessGame(){
number = Math.floor(Math.random()*11);
document.write(number);
var guess = prompt("Guess a number: ");
do {
guess = prompt("Keep guessing!");
if (number < guess) {
prompt("You've guessed too high!");
} else if (number > guess) {
prompt("You've guessed too low!");
} else document.write("Good Job!");
} while (guess != number);
}
</script>
</body>
</html>
I am having trouble with the loop. It loops fine but if I move the guess statement too after the if statement it goes back to that each time. If I put it outside the if statement then it seems to not actually allow me to guess a valid number. It's hard to explain :\

I would suggest just to use only one prompt and assign it to the variable.
function guessGame() {
var number = Math.random() * 11 | 0,
guess,
text = 'Guess a number:';
do {
guess = prompt(text);
if (number < guess) {
text = "You've guessed too high!";
} else if (number > guess) {
text = "You've guessed too low!";
}
} while (guess != number);
document.write("Good Job!");
}
guessGame();

Try this:
function guessGame(){
number = Math.floor(Math.random()*11);
document.write(number);
var guess = prompt("Guess a number: ");
while (guess != number) {
if (number < guess) {
guess = prompt("You've guessed too high! Keep guessing!");
} else {
guess = prompt("You've guessed too low! Keep guessing!");
}
}
document.write("Good Job!");
}
The while loop will keep running until the correct number is guessed, and then it will terminate.
edit: sorry, mistakes from typing too fast

I'd recommend use alert when you don't need user's response
function guessGame(){
number = Math.floor(Math.random()*11);
var guess;
do {
guess = prompt("Guess a number: "); // you should handle string input here
if (number < guess) {
alert("You've guessed too high!");
alert("Keep guessing!");
} else if (number > guess) {
alert("You've guessed too low!");
alert("Keep guessing!");
}
} while (guess != number);
alert("Good Job!");
}

Trust me, I'm a programmer.
function guessGame() {
guess:
var number = Math.floor(Math.random() * 11);
document.write(number);
var guess;// = prompt("Guess a number: ");
var text = 'Guess a number:';
guess = prompt(text);
if (number == guess) {
document.write("Good Job!");
return true;
} else {
if (number < guess) {
text = "You've guessed too low!";
} else {
text = "You've guessed too high!";
}
goto guess;
}
}
guessGame();