我想在“on”函数中更改<h2>及其id的值，但不会更改。
这是代码：
<div id="boardGame">
</div>
<script type="text/javascript">
json_dic = {"Too Much to Ask": "oHRjgi6sniY", "Sketchead": "GEfpkuCPjXs", "If You Were There, Beware": "ZVOwOzL9uDQ", "Plastic Tramp": "BiVXU2jt1Xo", "The Death Ramps": "p7cijGnXUJM", "Don't Sit Down 'Cause I've Moved Your Chair": "h1vYbHHhqYE", "R U Mine?": "VQH8ZTgna3Q", "2013": "O4vkZUC4VPA", "The Bakery": "P_D1Eqa2Lk4", "Potion Approaching": "Urw780t52zc", "Still Take You Home": "FKPKSK1nCKY", "Chun-Li's Spinning Bird Kick": "4lOdBxVS16o", "Come Together": "a-5tTz8flYI", "Snap Out of It": "PHoSRT2fNME", "Cigarette Smoker Fiona": "Wg89x455WK4", "Why'd You Only Call Me When You're High?": "6366dxFf-Os", "Brick by Brick": "qOTRx3ZqjjI", "Temptation Greets You Like Your Naughty Friend ": "VEWNOzgnmq0", "The Blond-O-Sonic Shimmer Trap": "EyBrLYN2Yok", "The Bad Thing": "3xTHjLf-ONg", "All My Own Stunts": "Er3r_J-mwII", "Love Is a Laserquest": "wxQVpRSxOZ0", "Dance Little Liar": "hf-B3Y3B0TQ", "Mardy Bum": "Lp1fQ51YZMM", "Stickin' to the Floor": "AQVMJkZGpSc", "Only Ones Who Know": "m-seRFY7-cw", "Crying Lightning": "fLsBJPlGIDU", "From the Ritz to the Rubble ": "givRh52Ic3A", "I.D.S.T.": "V6yORYEiLyU", "She's Thunderstorms": "tvHz5Rti0cU", "Catapult": "U3LsJMLWN2k", "Stop the World I Wanna Get Off with You": "3PyoxMSEHYI", "The Hellcat Spangled Shalalala": "dAlRXC19hmE", "Do I Wanna Know?": "bpOSxM0rNPM", "Knee Socks": "00bk5E7gecI", "That's Where You're Wrong": "tLOUVbemjro", "Leave Before the Lights Come On": "SEukS2YN9B8", "I Want It All": "SDTxuAEPfdY", "Secret Door": "ibyGhbvo94Q", "Suck It and See": "rjFGapDkSM0", "7": "R2t6vgC_OWw", "Brianstorm": "30w8DyEJ__0", "Baby I'm Yours": "EDLhMf6voq8", "Arabella": "Nj8r3qmOoZ8", "Old Yellow Bricks": "xLaeOrDmWQ4", "Don't Forget Whose Legs You're On": "qL0Z3Ly0CEw", "Riot Van": "j052-ROwPFM", "What If You Were Right the First Time?": "t2cFvzmqmwc", "Fire and the Thud": "VGlhSSP4nTk", "I Wanna Be Yours": "Y4NGoS330HE", "Mad Sounds": "J_-FwyoeV3E", "Fireside": "PG8yTUeptFU", "The Afternoon's Hat": "qbNKclt42Xc", "Reckless Serenade": "PY2FQ-LgmYo", "No Buses": "WK4wISbGvJw", "Electricity": "g-cukZ10j8A", "Little Illusion Machine (Wirral Riddler) ": "WlMzuzud8U4", "Piledriver Waltz": "njirT4N-JxU", "When the Sun Goes Down": "EqkBRVukQmE", "No. 1 Party Anthem": "83hFiC-siDs", "Evil Twin": "xwir-pg7WiA", "This House Is a Circus": "oDB-MGsWzQQ", "I Haven't Got My Strange": "a9yrz_psfLc", "Black Treacle": "1wznj4lD1Bs", "505": "ifZfUVp2chE", "Dangerous Animals": "qHe3E366_Po", "Perhaps Vampires Is a Bit Strong But..": "SjzOUf0AEiQ", "Fluorescent Adolescent": "ma9I9VBKPiw", "Library Pictures": "bmVerkoFPJU", "The View from the Afternoon": "PeQAZsyucbQ", "Despair in the Departure Lounge": "ZLS8ffCYN80", "I Bet You Look Good on the Dancefloor": "pK7egZaT3hs", "Bigger Boys and Stolen Sweethearts": "rLkikLrImnk", "Balaclava": "6LBCqG0YnTM", "Fake Tales of San Francisco": "ePg1tbia9Bg", "D Is for Dangerous": "zOlhvxPC3MQ", "Put Your Dukes Up John": "O8Wuv1WKldk", "My Propeller": "Z5vZovv8cPk", "Red Right Hand": "hcvGOUuDGXc", "One for the Road": "qN7gSMPQFss", "Joining the Dots": "wkvUl_l3o1c", "Red Light Indicates Doors Are Secured": "hdmR58BIHOg", "You and I ": "9zXkAaoBOLU", "Teddy Picker": "2A2XBoxtcUA", "Settle for a Draw": "IQ7NH2jcAAw", "Bad Woman ": "YnkJHU3qYIA", "Cornerstone": "LIQz6zZi7R0", "Fright Lined Dining Room": "qrqtD4TiO5c", "A Certain Romance": "WGyj5JyA5Ms", "If You Found This It's Probably Too Late": "SqKl1vcmvOU", "Who the Fuck Are Arctic Monkeys?": "oFeuKVkau6U", "Do Me a Favour": "lXJEDlLepD4", "You Probably Couldn't See for the Lights but You Were Staring Straight at Me": "j8iV3tK717s", "Dancing Shoes": "3aQELo7tXyI", "The Jeweller's Hands": "1rq0Ag15sAI", "Matador/Da Frame 2R": "DxoPxvJ0FNM", "Pretty Visitors": "4n7iaY22Do0", "You're So Dark": "6eoAwXkI3RA"}
var score = 0
var nb = 0
var iter = 0
var song
var start
var click
var listSongs = []
getHome()
$(document).on("click", '.calc_btn', function() {
iter++
$("#valueIter").html(iter+"/10")
if(iter == 10)
{
gameOver(score)
}
else
{
click = new Date()
time = (click.getTime() - start.getTime())/1000
if($(this).val() == song){
if(time <= 15)
score += parseInt((-1000/14)*time+929)
$("#valueScore").html(score)
$("#valueScore").css( "color", "green" )
}
else
{
$("#valueScore").html(score)
$("#valueScore").css( "color", "red" )
}
nb += 1
getSong()
}
})
function getHome()
{
score = 0
iter = 0
listSongs = []
$("#boardGame").html("<h2>Welcome to The Game of Monkeys</h2><table class='calculatrice' id='calc'><tbody><tr><td class='calc_td_btn'><input type='button' class='stres' value='Start' onclick='getSong()'></td></tr></tbody></table")
}
function getSong()
{
var keys = [];
for (var prop in json_dic) {
if (json_dic.hasOwnProperty(prop)) {
keys.push(prop);
}
}
song = keys[ keys.length * Math.random() << 0 ];
listSongs = [ song ]
url = json_dic[song]
while(listSongs.length <= 4)
{
var keys = [];
for (var prop in json_dic) {
if (json_dic.hasOwnProperty(prop)) {
keys.push(prop);
}
}
song_random = keys[ keys.length * Math.random() << 0 ];
listSongs.push(song_random)
}
$("#boardGame").html('<table class="calculatrice" id="calc"> '+
'<tbody>' +
'<tr>' +
'<td class="calc_td_btn">' +
'<div style="position:relative;width:380px;height:25px;overflow:hidden;">' +
'<div id="yt_video" style="position:absolute;top:-276px;left:-5px">' +
'</div>' +
'</div>' +
'</td>' +
'</tr>');
for(var i = 0; i <= 4; i++)
{
var randomIndex = Math.floor(Math.random() * listSongs.length);
var randomString = listSongs[randomIndex];
$("#boardGame").append('<tr>'+
'<td class="calc_td_btn">' +
'<input type="button" class="calc_btn" value="'+randomString+'">' +
'</td>' +
'</tr>')
var index = listSongs.indexOf(randomString);
listSongs.splice(index, 1);
}
$("#boardGame").append('<tr>' +
'<td class="calc_td_btn">' +
'<h2 id="valueScore">0 points</h2>' +
'<h2 id="valueIter">0/10</h2>' +
'<input type="button" class="stres" onclick="getHome()" value="Restart">' +
'</td>' +
'</tr>' +
'</tbody>' +
'</table>')
var nb = getRandomInt(0,100)
$("#yt_video").html("<iframe src='https://www.youtube.com/embed/"+url+"?autoplay=0&start="+nb+"' id='yt_video' width='380' height='300'></iframe>")
start = new Date()
}
function getRandomInt (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
function gameOver(score){
$("#boardGame").html("<h2>You scored "+score+" points</h2><table class='calculatrice' id='calc'><tbody><tr><td class='calc_td_btn'><input type='button' onclick='getHome()' class='stres' value='Restart'></td></tr></tbody></table")
}
</script>
</body>
</html>
#valueScore的价值不想改变。我认为这是一个范围问题，但我无法绕过它。
我可以在控制台中使用#valueScore的值，或者如果我将代码段$("#valueScore").html(score)放在我的JavaScript中的其他位置。
编辑：添加了整个代码
答案 0 :(得分：0)
问题是你在第93-106行吹走了所有元素的DOM而你正在重新创建它们。因此，您正在设置分数的元素将被销毁并替换为完全不同的<h2>。
不是破坏所有内容（第82行是替换'#boardGame'的html），你需要使用JQuery来修改已经存在的按钮，以便为它们提供歌曲列表的名称
作为替代方案，请尝试这样做：
<div id="button_wrapper">，以便您可以插入新按钮。$('#button_wrapper .choice_button').remove() for循环插入新按钮，就像您在第93行上所做的那样$('#valueScore')还没有被吹走，因此得分应保持不变。我修改了你的代码，以便将它带到我认为的地方，这就是你所追求的：
<div id="boardGame">
</div>
<script src="http://code.jquery.com/jquery-1.11.0.min.js"></script>
<script type="text/javascript">
json_dic = {"Too Much to Ask": "oHRjgi6sniY", "Sketchead": "GEfpkuCPjXs", "If You Were There, Beware": "ZVOwOzL9uDQ", "Plastic Tramp": "BiVXU2jt1Xo", "The Death Ramps": "p7cijGnXUJM", "Don't Sit Down 'Cause I've Moved Your Chair": "h1vYbHHhqYE", "R U Mine?": "VQH8ZTgna3Q", "2013": "O4vkZUC4VPA", "The Bakery": "P_D1Eqa2Lk4", "Potion Approaching": "Urw780t52zc", "Still Take You Home": "FKPKSK1nCKY", "Chun-Li's Spinning Bird Kick": "4lOdBxVS16o", "Come Together": "a-5tTz8flYI", "Snap Out of It": "PHoSRT2fNME", "Cigarette Smoker Fiona": "Wg89x455WK4", "Why'd You Only Call Me When You're High?": "6366dxFf-Os", "Brick by Brick": "qOTRx3ZqjjI", "Temptation Greets You Like Your Naughty Friend ": "VEWNOzgnmq0", "The Blond-O-Sonic Shimmer Trap": "EyBrLYN2Yok", "The Bad Thing": "3xTHjLf-ONg", "All My Own Stunts": "Er3r_J-mwII", "Love Is a Laserquest": "wxQVpRSxOZ0", "Dance Little Liar": "hf-B3Y3B0TQ", "Mardy Bum": "Lp1fQ51YZMM", "Stickin' to the Floor": "AQVMJkZGpSc", "Only Ones Who Know": "m-seRFY7-cw", "Crying Lightning": "fLsBJPlGIDU", "From the Ritz to the Rubble ": "givRh52Ic3A", "I.D.S.T.": "V6yORYEiLyU", "She's Thunderstorms": "tvHz5Rti0cU", "Catapult": "U3LsJMLWN2k", "Stop the World I Wanna Get Off with You": "3PyoxMSEHYI", "The Hellcat Spangled Shalalala": "dAlRXC19hmE", "Do I Wanna Know?": "bpOSxM0rNPM", "Knee Socks": "00bk5E7gecI", "That's Where You're Wrong": "tLOUVbemjro", "Leave Before the Lights Come On": "SEukS2YN9B8", "I Want It All": "SDTxuAEPfdY", "Secret Door": "ibyGhbvo94Q", "Suck It and See": "rjFGapDkSM0", "7": "R2t6vgC_OWw", "Brianstorm": "30w8DyEJ__0", "Baby I'm Yours": "EDLhMf6voq8", "Arabella": "Nj8r3qmOoZ8", "Old Yellow Bricks": "xLaeOrDmWQ4", "Don't Forget Whose Legs You're On": "qL0Z3Ly0CEw", "Riot Van": "j052-ROwPFM", "What If You Were Right the First Time?": "t2cFvzmqmwc", "Fire and the Thud": "VGlhSSP4nTk", "I Wanna Be Yours": "Y4NGoS330HE", "Mad Sounds": "J_-FwyoeV3E", "Fireside": "PG8yTUeptFU", "The Afternoon's Hat": "qbNKclt42Xc", "Reckless Serenade": "PY2FQ-LgmYo", "No Buses": "WK4wISbGvJw", "Electricity": "g-cukZ10j8A", "Little Illusion Machine (Wirral Riddler) ": "WlMzuzud8U4", "Piledriver Waltz": "njirT4N-JxU", "When the Sun Goes Down": "EqkBRVukQmE", "No. 1 Party Anthem": "83hFiC-siDs", "Evil Twin": "xwir-pg7WiA", "This House Is a Circus": "oDB-MGsWzQQ", "I Haven't Got My Strange": "a9yrz_psfLc", "Black Treacle": "1wznj4lD1Bs", "505": "ifZfUVp2chE", "Dangerous Animals": "qHe3E366_Po", "Perhaps Vampires Is a Bit Strong But..": "SjzOUf0AEiQ", "Fluorescent Adolescent": "ma9I9VBKPiw", "Library Pictures": "bmVerkoFPJU", "The View from the Afternoon": "PeQAZsyucbQ", "Despair in the Departure Lounge": "ZLS8ffCYN80", "I Bet You Look Good on the Dancefloor": "pK7egZaT3hs", "Bigger Boys and Stolen Sweethearts": "rLkikLrImnk", "Balaclava": "6LBCqG0YnTM", "Fake Tales of San Francisco": "ePg1tbia9Bg", "D Is for Dangerous": "zOlhvxPC3MQ", "Put Your Dukes Up John": "O8Wuv1WKldk", "My Propeller": "Z5vZovv8cPk", "Red Right Hand": "hcvGOUuDGXc", "One for the Road": "qN7gSMPQFss", "Joining the Dots": "wkvUl_l3o1c", "Red Light Indicates Doors Are Secured": "hdmR58BIHOg", "You and I ": "9zXkAaoBOLU", "Teddy Picker": "2A2XBoxtcUA", "Settle for a Draw": "IQ7NH2jcAAw", "Bad Woman ": "YnkJHU3qYIA", "Cornerstone": "LIQz6zZi7R0", "Fright Lined Dining Room": "qrqtD4TiO5c", "A Certain Romance": "WGyj5JyA5Ms", "If You Found This It's Probably Too Late": "SqKl1vcmvOU", "Who the Fuck Are Arctic Monkeys?": "oFeuKVkau6U", "Do Me a Favour": "lXJEDlLepD4", "You Probably Couldn't See for the Lights but You Were Staring Straight at Me": "j8iV3tK717s", "Dancing Shoes": "3aQELo7tXyI", "The Jeweller's Hands": "1rq0Ag15sAI", "Matador/Da Frame 2R": "DxoPxvJ0FNM", "Pretty Visitors": "4n7iaY22Do0", "You're So Dark": "6eoAwXkI3RA"}
var score = 0
var nb = 0
var iter = 0
var song
var start
var click
var listSongs = []
getHome()
$(document).on("click", '.calc_btn', function() {
iter++
$("#valueIter").html(iter+"/10")
if(iter == 10)
{
gameOver(score)
}
else
{
click = new Date()
time = (click.getTime() - start.getTime())/1000
if($(this).val() == song){
if(time <= 15)
score += parseInt((-1000/14)*time+929)
$("#valueScore").html(score)
$("#valueScore").css( "color", "green" )
}
else
{
$("#valueScore").html(score)
$("#valueScore").css( "color", "red" )
}
nb += 1
getSong()
return false;
}
})
function getHome()
{
score = 0
iter = 0
listSongs = []
$("#boardGame").html(
'<h2>Welcome to The Game of Monkeys</h2>'+
'<table class="calculatrice" id="calc">' +
'<tbody>' +
'</tbody>' +
'</table>' +
'<div id="gameButtons" style="display: none;">' +
'<h2 id="valueScore">0 points</h2>' +
'<h2 id="valueIter">0/10</h2>' +
'<input type="button" class="stres" onclick="getHome()" value="Restart">' +
'</div>' +
'<input type="button" class="stres" value="Start" onclick="getSong()">'
)
}
function getSong()
{
var keys = [];
for (var prop in json_dic) {
if (json_dic.hasOwnProperty(prop)) {
keys.push(prop);
}
}
song = keys[ keys.length * Math.random() << 0 ];
listSongs = [ song ]
url = json_dic[song]
while(listSongs.length <= 4)
{
var keys = [];
for (var prop in json_dic) {
if (json_dic.hasOwnProperty(prop)) {
keys.push(prop);
}
}
song_random = keys[ keys.length * Math.random() << 0 ];
listSongs.push(song_random)
}
// adds the music player, of course
$('#calc tbody').html (
'<tr>' +
'<td class="calc_td_btn">' +
'<div style="position:relative;width:380px;height:25px;overflow:hidden;">' +
'<div id="yt_video" style="position:absolute;top:-276px;left:-5px">' +
'</div>' +
'</div>' +
'</td>' +
'</tr>');
// adds the multiple choice buttons
for(var i = 0; i <= 4; i++)
{
var randomIndex = Math.floor(Math.random() * listSongs.length);
var randomString = listSongs[randomIndex];
$("#calc tbody").append('<tr>'+
'<td class="calc_td_btn">' +
'<input type="button" class="calc_btn" value="'+randomString+'">' +
'</td>' +
'</tr>')
var index = listSongs.indexOf(randomString);
listSongs.splice(index, 1);
}
// shows the score and the restart button
$('#gameButtons').show();
var nb = getRandomInt(0,100)
$("#yt_video").html("<iframe src='https://www.youtube.com/embed/"+url+"?autoplay=0&start="+nb+"' id='yt_video' width='380' height='300'></iframe>")
start = new Date()
}
function getRandomInt (min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
function gameOver(score){
$("#boardGame").html("<h2>You scored "+score+" points</h2><table class='calculatrice' id='calc'><tbody><tr><td class='calc_td_btn'><input type='button' onclick='getHome()' class='stres' value='Restart'></td></tr></tbody></table")
}
</script>
</body>
</html>
答案 1 :(得分：-2)
哦，我觉得我看到了问题。您不需要使用.html函数。
使用jQuery：
$("#valueIter").val(iter+"/10");
$("#valueScore").val(score);
html函数用于使用原始html填充元素。这里的不同之处在于jQuery提供.val（）和.text（）作为任何元素的getter和setter，等同于javascript equivelent
element.value = score;