我正在为我的班级制作一个猜谜游戏，我们应该实施一个存储在本地的记分系统。我以为我理解了这个概念，但它并没有按照我的意图运作。我在玩游戏时将值存储在localStorage中，但是当我刷新时，值会重置......任何洞察力都会很棒！下面是我的脚本的开头，下面是我的HTML文件。
编辑：我将得分初始化为1的原因是因为每当用户猜对时，加上4分（产生+3），当用户猜错时，扣除1分（产生-2）。每次单击重启按钮时，用户都会失去1点。编辑2：不妨粘贴我的其余部分以获得更清晰：P
编辑3：JSfiddle太棒了！ http://jsfiddle.net/2pdaoeu6/'use strict';
//Define a container for the game, its variables and its methods.
var game = {
answerPosition: 0, // position of the current answer in the answersList - start at 0
display: '', // the current dash/guessed letters display - ex '-a-a--r--t'
wrong: '', // all the wrong letters guessed so far
answer: '', // the correct answer - one word from game.answersList
wrongCount: 0, // the number of wrong guesses so far
over: false, // is the game over?
score: 1, // 1 - 1 = 0
answersList: [ // list of answers to cycle through
'JavaScript',
'document',
'element',
'ajax',
'jQuery',
'event',
'json',
'listener',
'transition',
'window'
]
};
game.restart = function () {
localStorage.setItem('localScore', game.score - 1);
var localScore = Number(localStorage.getItem('localScore'));
// var localScore = localStorage.localScore;
// Initialize the game at the beginning or after restart
// Initialize the game variables - the model
game.answer = game.answersList[game.answerPosition].toLowerCase(); // get the word for this round
// use the modulo operator to cycle through the answersList
game.answerPosition = (game.answerPosition + 1) % game.answersList.length;
game.display = game.dashes(game.answer.length);
game.wrong = '';
game.wrongCount = 0;
game.over = false;
game.score = localScore;
// Initialize the web page (the view)
$('progress').val('0'); // initialize the progress bar
$('#display').text(game.display);
$('#wrong').text('');
$('#guessedletter').val('');
$('#score').text(localScore); // initialize score
// The focus method invoked on an input element allows the user to type in that input without having to click it.
$('#guessedletter').focus();
};
game.play = function () {
// Invoked when the user clicks on GUESS
if (game.over) {// if the game is over
$('#wrong').text('Press RESTART to play again.'); // user has to restart
} else {
//if the game is not over yet
var guess = $('#guessedletter').val().toLowerCase();
if (game.check(game.answer, guess)) {
// if the guess is valid
$('#display').text(game.display);
} else if (guess) {
// If it's a wrong non-empty guess
game.wrong = guess + ' ' + game.wrong;
game.wrongCount++;
$('#wrong') .text(game.wrong);
$('progress').val(game.wrongCount);
}
// reinitialize the guess
$('#guessedletter') .val('');
$('#guessedletter').focus();
// check for a win or loss
game.outcome();
}
};
game.dashes = function (number) {
// this function takes a number as a parameter
// and returns a string with that many dashes
var result = '';
for (var i = 1; i <= number; i++) {
result = result + '-';
}
return result;
};
game.check = function (answer, letter) {
// Checks all occurrences of the letter guessed against game.answer.
// Returns true if the guess is correct and false otherwise.
// Updates the game dash display variable game.display if applicable.
var position;
var result = false;
if (letter) { // check that guess is not the empty string
// Find the first occurrence of guess in the answer
position = game.answer.indexOf(letter);
// if the guessed letter is found in the answer
if (position > - 1) {
result = true;
}
while (position >= 0) {
// update the dash display and find all remaining occurrences
game.display = game.display.substring(0, position) + letter + game.display.substring(position + 1);
// get the next occurrence
position = game.answer.indexOf(letter, position + 1);
}
}
return result;
};
game.outcome = function () {
// check if the game is won or lost
if (game.answer === game.display) {
$('#wrong') .text('Congratulations! You win! +3 points.');
// game.score = (game.score + 4);
game.score = Number(localStorage.getItem('localScore')) + 4;
// localStorage['localScore'] = Number(localStorage.getItem('localScore')) + 4;
game.over = true; // game is over. User has to restart to play again
setTimeout(function(){game.restart()}, 3000);
} else if (game.wrongCount >= 10) {
$('#wrong') .text('No more guesses; the answer was: ' + game.answer
+ '! -2 points :(');
// game.score = (game.score - 1);
game.score = Number(localStorage.getItem('localScore')) - 1;
// localStorage['localScore'] = Number(localStorage.getItem('localScore')) - 1;
game.over = true; // game is over. User has to restart to play again
setTimeout(function(){game.restart()}, 3000);
}
};
// Main program starts here
$(document).ready(function () {
game.restart();
$('#guessbutton').click(game.play);
$('#restart').click(game.restart);
});
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Guessing Game</title>
<link rel="stylesheet" type="text/css" href="guess.css" media="all">
</head>
<body>
<h2>Guess a Letter</h2>
<p id="display" class="letters"></p>
<input id="guessedletter" type="text" maxlength='1' class="letters" autofocus>
<div>
<input id="guessbutton" type="button" value="GUESS">
</div>
<p>Wrong Letters</p>
<p id="wrong" class="letters wrong"> </p>
<progress value="0" max="10"></progress>
<div>
<input id="restart" type="button" value="RESTART">
</div>
<p>Score: <span id="score"></span></p>
<script defer src="../scripts/jquery-1.11.3.js"></script>
<script defer src="../scripts/guess.js"></script>
</body>
</html>
答案 0 :(得分：5)
据我所知，您在加载应用程序时正在调用game.restart()。在restart()方法中，您正在执行此操作：
localStorage.setItem('localScore', game.score - 1);
当您的应用程序启动时，您每次都会重置localStorage键localScore，并且您的最后分数已消失。尝试检查值是否存在，如果存在，请跳过setItem，如下所示：
game.restart = function () {
// if the localScore is not set, initialize it with your default value
// otherwise don't set the localScore -> it would overwrite the saved values
if(localStorage.getItem('localScore') === null) {
localStorage.setItem('localScore', game.score - 1);
}
// .... rest of your function
}