36 lines
1.1 KiB
JavaScript
36 lines
1.1 KiB
JavaScript
"use strict";
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// get a random number between 1 and 20
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const num = Math.ceil(Math.random() * 20);
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// get the computer's guess
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const computerGuess = Math.ceil(Math.random() * 20);
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// get the user's guess
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const userGuess = parseInt(prompt("Enter a number between 1 and 20"));
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if (isNaN(userGuess)) {
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alert("Not a valid number. Computer wins.")
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} else if (userGuess < 1 || userGuess > 20) {
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alert("Not a number between 1 and 20. Computer wins.");
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} else {
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let message = "The number is " + num + ".\n" +
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"You guessed " + userGuess +
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" and the computer guessed " + computerGuess + ".\n";
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// compute the difference between the guesses and the number
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const computerDiff = Math.abs(num - computerGuess);
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const userDiff = Math.abs(num - userGuess);
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// determine the winner
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if (userDiff === computerDiff) {
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message += "It's a tie!";
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} else if (userDiff < computerDiff) {
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message += "You WIN!";
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} else {
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message += "Computer wins.";
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}
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alert(message);
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}
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