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我在全球范围内定义了我的变量，以便以后在函数中访问它。但是，我从功能中获得了"未定义"的值。为什么不将其变成？
注意： - 全局变量是"组合"，这是一个数组。 - 我想使用的功能是"单击1.我尝试将变量作为参数传递给该函数。不起作用。2.我确认该变量已定义并包含定义函数中的正确值。3.我确认另一个全局变量是使其进入函数。
这是将组合定义为全局变量的地方：
$(document).ready(function() { // upon page load
var badGuesses; // reset bad guess counter
var theWord; // defines variable globally
var combineDashes; // defines variable globally
var letter; // defines variable globally
var alphabet = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Z"]; // array of letters to choose
$("#lettersRemaining").html(alphabet); // gets elements of the alphabet array and displays on UI
这是定义组合的功能（作为数组）：
// N E W G A M E B U T T O N C L I C K E D
$("#newGame").click(function() { // when user clicks on Start New Game button...
$("#status").hide(); // upon game reset hide the status section stating game over
var alphabet = ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Z"]; // reset array of letters to choose from
$("#hangmanGuy").html('<img src="img/Hangman-0.png" id="hangmanImg" alt="pic of hangman no limbs" width="144" height="216">'); // reset hangman image
badGuesses = 0; // reset guess counter which is used later
var wordCollection = ["MANSION", "STATUE", "GORILLA", "NOTEBOOK", "SMARTPHONE", "ILLUSTRATION", "PHOTO", "ELEGANT", "ARBORIST", "KEYBOARD", "CALENDAR", "CAPITAL", "TEXTBOOK", "HORRIBLE", "LIBRARY"]; // array of words the computer will randomly choose from
theWord = wordCollection[Math.floor(Math.random()*wordCollection.length)]; // randomly selects a word
console.log("theWord is ....");
console.log(theWord);
var theWordLength = theWord.length; // Get number of characters in randomly selected word to know how many dashes to display
console.log("theWordLength is ....");
console.log(theWordLength);
// D I S P L A Y D A S H E S
var combineDashes = []; // creates an array to hold the number of dashes inside the for loop
for (var i = theWordLength; i > 0; i--)
{
combineDashes.push(" - "); // each loop through adds a dash to the array
}
combineDashes.join(" "); // joins cumulative dashes and converts to a string
$("#dashes").html(combineDashes); // displays dashes on UI
console.log("combineDashes is...");
console.log(combineDashes);
});
这是我尝试访问组合变量的地方：
// F O R B A D G U E S S E S
if (indices.length === 0) // if bad guess
{
badGuesses++; // increment bad guess counter
$("#status").show();
$("#status").html("Sorry, " + letter + " is incorrect. Try again."); // status message displays
console.log("Total badGuesses...");
console.log(badGuesses);
// remove guessed letter from alphabet
var alphaIndex = alphabet.indexOf(letter); // gets index of letter in alphabet
alphabet.splice(alphaIndex,1); // removes the letter from the alphabet array
console.log("alphabet index of letter guessed...");
console.log(alphaIndex);
$("#lettersRemaining").html(alphabet); // refreshes letters remaining
// display correct hangman image based on how many bad guesses
if (badGuesses === 1)
{
$("#hangmanGuy").html('<img src="img/Hangman-1.png" id="hangmanImg" alt="pic of hangman 1 limb" width="144" height="216">');
}
else if (badGuesses === 2)
{
$("#hangmanGuy").html('<img src="img/Hangman-2.png" id="hangmanImg" alt="pic of hangman 2 limbs" width="144" height="216">');
}
else if (badGuesses === 3)
{
$("#hangmanGuy").html('<img src="img/Hangman-3.png" id="hangmanImg" alt="pic of hangman 3 limbs" width="144" height="216">');
}
else if (badGuesses === 4)
{
$("#hangmanGuy").html('<img src="img/Hangman-4.png" id="hangmanImg" alt="pic of hangman 4 limbs" width="144" height="216">');
}
else if (badGuesses === 5)
{
$("#hangmanGuy").html('<img src="img/Hangman-5.png" id="hangmanImg" alt="pic of hangman 5 limbs" width="144" height="216">');
}
else if (badGuesses === 6)
{
$("#hangmanGuy").html('<img src="img/Hangman-6.png" id="hangmanImg" alt="pic of hangman 6 limbs" width="144" height="216">');
$("#status").html("Game Over. Sorry, you lose. Click Start New Game and try again."); // status message displays
}
}
// F O R G O O D G U E S S E S
else
{
// remove guessed letter from alphabet
var alphaIndex = alphabet.indexOf(letter); // gets index of letter in alphabet
alphabet.splice(alphaIndex,1); // removes the letter from the alphabet array
console.log("alphabet index of letter guessed...");
console.log(alphaIndex);
$("#lettersRemaining").html(alphabet); // refreshes letters remaining
// replace dash(es) with letter
combineDashes[indices] = letter; // <--- HUNG UP HERE !!!!
console.log(letter);
console.log(combineDashes);
$("#status").show();
$("#status").html(letter + " is correct! Go again."); // status message displays
}
});
});
var combinedashes = []应该组合= []，否则您正在设置一个新的本地变量，其中您想设置全局。
iam不确定，但我认为您应该从以下行删除'var'
var combineDashes = []; // creates an array to hold the number of dashes inside the for loop
我想脚本创建了一个新的本地变量，此名称将在功能结束后抛弃