如何將倒數計時器添加到我的頁面

Question

我目前正在使用 jQuery 和 JavaScript 開發西蒙說類型游戲。

我在 Github 上鏈接了游戲的完整副本

Github 下載並解壓縮以完整查看游戲 https://github.com/Jamiex304/Simon_Says_Game_Demo （現已禁用）

我遇到了一個問題，我想添加一個玩家可以看到的計時器。

目前，該級別將一直持續到用戶單擊序列中的錯誤按鈕。

游戲的一些基本信息：
用戶將看到一個隨機序列，每個級別都會添加一個新序列以及一個額外的移動。 每次用戶輸入正確的序列時，他們都會進入下一個級別，所有信息都可以在附加的帶有注釋的 JavaScript 中找到

我想幫助添加的內容

我只想添加一個計時器，當用戶單擊開始按鈕時，它會在 10 秒后開始。
每次輸入正確的序列時，計時器會在達到 5 個正確序列時再次啟動，計時器會增加 5 秒。

我附上了處理游戲事件的 JavaScript，並且有一個指向完整站點的鏈接。

任何幫助都會很棒。

JavaScript

var game={ //game object
    level: 1, //current level
    turn: 0, //current turn
    difficulty: 1, // user difficulty
    score: 0, //current score
    active: false, //whether a turn is active or not
    handler: false, // whether the click and sound handlers are active
    shape: '.shape', // cached string for the pad class
    genSequence: [], //array containing the generated/randomized pads
    plaSequence: [], //array containing the users pad selections
    
    init: function(){                   //initialises the game
        if(this.handler === false){     //checks to see if handlers are already active
            this.initPadHandler();      //if not activate them
        }
        this.newGame();             //reset the game defaults

    },

    initPadHandler: function(){

        that=this;

        $('.pad').on('mouseup',function(){

            if(that.active===true){

                var pad=parseInt($(this).data('pad'),10);
                    
                that.flash($(this),1,300, pad);

                that.logPlayerSequence(pad);

            }
        });

        this.handler=true;

    },

    newGame: function(){            //resets the game and generates a starts a new level

        this.level=1;
        this.score=0;
        this.newLevel();
        this.displayLevel();
        this.displayScore();

    },

    newLevel: function(){
        
        this.genSequence.length=0;
        this.plaSequence.length=0;
        this.pos=0;
        this.turn=0;
        this.active=true;
        
        this.randomizePad(this.level); //randomize pad with the correct amount of numbers for this level
        this.displaySequence(); //show the user the sequence

    },
    
    flash: function(element, times, speed, pad){ //function to make the pads appear to flash

        var that = this;                        //cache this

        if(times > 0){                          //make sure we are supposed to flash
            that.playSound(pad);                //play the corresponding pad sound
            element.stop().animate({opacity: '1'}, {        //animate the element to appear to flash
                duration: 50,
                complete: function(){
                element.stop().animate({opacity: '0.6'}, 200);
                }
            });                                             //end animation

        }

        if (times > 0) {                                    //call the flash function again until done the correct amount of times 
            setTimeout(function () {
                that.flash(element, times, speed, pad);
            }, speed);
            times -= 1;                     //times - 1 for each time it's called
        }
    },

    playSound: function(clip){              //plays the sound that corresponds to the pad chosen


        var sound= $('.sound'+clip)[0];
        console.log(sound);
        console.log($('.sound'+clip));
        sound.currentTime=0;                //resets audio position to the start of the clip
        sound.play();                       //play the sound


    },

    randomizePad: function(passes){         //generate random numbers and push them to the generated number array iterations determined by current level

        for(i=0;i<passes;i++){
            
            this.genSequence.push(Math.floor(Math.random() * 4) + 1);
        }
    },

    logPlayerSequence: function(pad){       //log the player selected pad to user array and call the checker function

        this.plaSequence.push(pad);
        this.checkSequence(pad);
        
    
    },

    checkSequence: function(pad){           //checker function to test if the pad the user pressed was next in the sequence

        that=this;

        if(pad !== this.genSequence[this.turn]){    //if not correct 
                
                this.incorrectSequence();

            }else{                                  //if correct
                this.keepScore();                   //update the score
                this.turn++;                        //incrememnt the turn

            }

        if(this.turn === this.genSequence.length){  //if completed the whole sequence
            
            this.level++;                           //increment level, display it, disable the pads wait 1 second and then reset the game
            this.displayLevel();
            this.active=false;
            setTimeout(function(){
                that.newLevel();
            },1000);
        }
    },

    displaySequence: function(){                    //display the generated sequence to the user
        
        var that=this;

        $.each(this.genSequence, function(index, val) {     //iterate over each value in the generated array
            
            setTimeout(function(){
                
                that.flash($(that.shape+val),1,300,val);
            
            },500*index*that.difficulty);               // multiply timeout by how many items in the array so that they play sequentially and multiply by the difficulty modifier
        });
    },

    displayLevel: function(){                           //just display the current level on screen
        
        $('.level h2').text('Level: '+this.level);

    },

    displayScore: function(){                           //display current score on screen
        $('.score h2').text('Score: '+this.score);
    },

    keepScore: function(){                              //keep the score
        
        var multiplier=0;

        switch(this.difficulty)                         //choose points modifier based on difficulty
        {
            case '2':
                multiplier=1;
                break;
            
            case '1':
                multiplier=2;
                break;

            case '0.5':
                multiplier = 3;
                break;

            case '0.25':
                multiplier = 4;
                break;
        }

        this.score += (1 * multiplier);                 //work out the score

        this.displayScore();                            //display score on screen
    },

    incorrectSequence: function(){                      //if user makes a mistake

        var corPad = this.genSequence[this.turn],       //cache the pad number that should have been pressed
            
            that = this;
            this.active=false;
            this.displayLevel();
            this.displayScore();

        setTimeout(function(){                          //flash the pad 4 times that should have been pressed
            that.flash($(that.shape+corPad),4,300,corPad);
        },500);

        $('.start').show();                             //enable the start button again and allow difficulty selection again
        $('.difficulty').show();

    }

};
$(document).ready(function(){                           //document ready

    $('.start').on('mouseup', function(){               //initialise a game when the start button is clicked
        $(this).hide();
        game.difficulty = $('input[name=difficulty]:checked').val();
        $('.difficulty').hide();
        game.init();


    });

    
});

Answer 1

好的，我想我已經按照你想要的方式做到了，這里是完整的 js：

（我已經評論了我添加的部分）

var game={ //game object
    level: 1, //current level
    turn: 0, //current turn
    difficulty: 1, // user difficulty
    score: 0, //current score
    active: false, //whether a turn is active or not
    handler: false, // whether the click and sound handlers are active
    shape: '.shape', // cached string for the pad class
    genSequence: [], //array containing the generated/randomized pads
    plaSequence: [], //array containing the users pad selections

    init: function(){                   //initialises the game
        if(this.handler === false){     //checks to see if handlers are already active
            this.initPadHandler();      //if not activate them
        }
        this.newGame();             //reset the game defaults

    },

    initPadHandler: function(){

        that=this;

        $('.pad').on('mouseup',function(){

            if(that.active===true){

                var pad=parseInt($(this).data('pad'),10);

                that.flash($(this),1,300, pad);

                that.logPlayerSequence(pad);

            }
        });

        this.handler=true;

    },

    newGame: function(){            //resets the game and generates a starts a new level

        this.level=1;
        this.score=0;
        this.newLevel();
        this.displayLevel();
        this.displayScore();

        //initialize timer to 10 seconds
        this.timer = 10;  

    },

    newLevel: function(){

        this.genSequence.length=0;
        this.plaSequence.length=0;
        this.pos=0;
        this.turn=0;
        this.active=true;

        this.randomizePad(this.level); //randomize pad with the correct amount of numbers for this level
        this.displaySequence(); //show the user the sequence
    },

    flash: function(element, times, speed, pad){ //function to make the pads appear to flash

        var that = this;                        //cache this

        if(times > 0){                          //make sure we are supposed to flash
            that.playSound(pad);                //play the corresponding pad sound
            element.stop().animate({opacity: '1'}, {        //animate the element to appear to flash
                duration: 50,
                complete: function(){
                element.stop().animate({opacity: '0.6'}, 200);
                }
            });                                             //end animation

        }

        if (times > 0) {                                    //call the flash function again until done the correct amount of times 
            setTimeout(function () {
                that.flash(element, times, speed, pad);
            }, speed);
            times -= 1;                     //times - 1 for each time it's called
        }
    },

    playSound: function(clip){              //plays the sound that corresponds to the pad chosen


        var sound= $('.sound'+clip)[0];
        console.log(sound);
        console.log($('.sound'+clip));
        sound.currentTime=0;                //resets audio position to the start of the clip
        sound.play();                       //play the sound


    },

    randomizePad: function(passes){         //generate random numbers and push them to the generated number array iterations determined by current level

        for(i=0;i<passes;i++){

            this.genSequence.push(Math.floor(Math.random() * 4) + 1);
        }
    },

    logPlayerSequence: function(pad){       //log the player selected pad to user array and call the checker function

        this.plaSequence.push(pad);
        this.checkSequence(pad);


    },

    checkSequence: function(pad){           //checker function to test if the pad the user pressed was next in the sequence

        that=this;

        if(pad !== this.genSequence[this.turn]){    //if not correct 

                this.incorrectSequence();

            }else{                                  //if correct
                this.keepScore();                   //update the score
                this.turn++;                        //incrememnt the turn

            }

        if(this.turn === this.genSequence.length){  //if completed the whole sequence

            this.level++;                           //increment level, display it, disable the pads wait 1 second and then reset the game
            this.displayLevel();
            this.active=false;

            // Stop counting when sequence is correct to avoid time running out before starting next level
            clearInterval(this.timerInterval);

            //Add 5 seconds each 5th level
            this.timer = 10 + 5 * Math.floor(this.level / 5);

            //Update timerdisplay to show fulltime while displaying next level sequence
            $(".Timer p").html(this.timer);

            setTimeout(function(){
                that.newLevel();
            },1000);
        }
    },

    // Countdown and update timer, call incorrectsequence when time's up
    countDown: function(){ 
        this.timer -= 0.1;
        $(".Timer p").html(this.timer.toFixed(1));   // Display 9.0 instad of 9
        if(this.timer < 0.1){
            this.incorrectSequence();
        }
    },

    displaySequence: function(){                    //display the generated sequence to the user

        var that=this;

        var timerCount = 0;

        $.each(this.genSequence, function(index, val) {     //iterate over each value in the generated array
            timerCount = index;
            setTimeout(function(){

                that.flash($(that.shape+val),1,300,val);

            },500*index*that.difficulty);               // multiply timeout by how many items in the array so that they play sequentially and multiply by the difficulty modifier
        });

        // Wait to start timer until full sequence is displayed
        setTimeout(function(){ that.timerInterval = setInterval(function(){that.countDown()}, 100)}, 500*timerCount*that.difficulty);
    },

    displayLevel: function(){                           //just display the current level on screen

        $('.level h2').text('Level: '+this.level);

    },

    displayScore: function(){                           //display current score on screen
        $('.score h2').text('Score: '+this.score);
    },

    keepScore: function(){                              //keep the score

        var multiplier=0;

        switch(this.difficulty)                         //choose points modifier based on difficulty
        {
            case '2':
                multiplier=1;
                break;

            case '1':
                multiplier=2;
                break;

            case '0.5':
                multiplier = 3;
                break;

            case '0.25':
                multiplier = 4;
                break;
        }

        this.score += (1 * multiplier);                 //work out the score

        this.displayScore();                            //display score on screen
    },

    incorrectSequence: function(){                      //if user makes a mistake

        //Stop counting down timer and display start message
        clearInterval(this.timerInterval);
        $(".Timer p").html("Get Ready your time starts when you click start");

        var corPad = this.genSequence[this.turn],       //cache the pad number that should have been pressed

            that = this;
            this.active=false;
            this.displayLevel();
            this.displayScore();

        setTimeout(function(){                          //flash the pad 4 times that should have been pressed
            that.flash($(that.shape+corPad),4,300,corPad);
        },500);

        $('.start').show();                             //enable the start button again and allow difficulty selection again
        $('.difficulty').show();

    }

};
$(document).ready(function(){                           //document ready

    $('.start').on('mouseup', function(){               //initialise a game when the start button is clicked
        $(this).hide();
        game.difficulty = $('input[name=difficulty]:checked').val();
        $('.difficulty').hide();
        game.init();


    });


});

你可以在這里查看： JSFiddle （小提琴中的聲音被禁用）

Answer 2

除了計時器之外，您並沒有真正具體說明您想要什么，但是根據您的標記，您正在尋找類似這樣的東西嗎？

這是你更新的小提琴

 var $timer = $('.Timer'), $timerTitle = $('.TimerTitle'), $start = $('.start'), $increment = $('.increment'), maxDuration = 10, defaultDuration = 10, count = 0, $gameCount = $('#gameCount'); $timerTitle.text("Get ready! You have " + maxDuration + " seconds!"); $start.on('click', function() { getDuration(); return false; }); function getDuration() { $start.prop('disabled', true); setTimeout(function() { var duration = $timer.data('duration'); if(duration === undefined || duration < 0) duration = maxDuration; $timer.text(duration); $timer.data('duration', --duration); if(duration > -1) { if(duration < 5) { if(duration % 2 == 0) { $timer.css({'background-color':'blue', 'color':'white'}); } else { $timer.css({'background-color':'transparent', 'color':'black'}); } } getDuration(); } else { count++; $gameCount.text("Current game count: " + count); if(count % 5 == 0) defaultDuration += 5; maxDuration = defaultDuration; $timer.css({'background-color':'transparent', 'color':'black'}); $timer.text(''); $timerTitle.text("Get ready! You have " + maxDuration + " seconds!"); $start.prop('disabled', false); } }, 1000); }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.0.0/jquery.min.js"></script> <div align='center'> <div class="TimerTitle"></div> <div class="Timer"></div> <br /> <button class="start">start</button> <div id='gameCount'>Current game count: 0</div> </div>

Answer 3

有點不合常規（不是倒數，而是倒數），但這是怎么回事：

http://jsfiddle.net/rudiedirkx/nrp3e269/

神奇的是觸發 60/s 的tick() ：

var tickStart = 0;
function tick() {
    var tickSpent = (Date.now() - tickStart) / 1000,
        timeLeft = startTimeLeft - tickSpent;
    tl.textContent = Math.round(timeLeft * 10) / 10;
    if ( timeLeft > 0 ) {
        requestAnimationFrame(tick);
    }
    else {
        document.body.classList.add('gameover');
    }
}

開始按鈕開始計數：

tickStart = Date.now();
tick();

移動按鈕將時間添加到計數中：

if ( ++moves % 5 == 0 ) {
    startTimeLeft += 5;
}
else {
    startTimeLeft += 1;
}

這只是一個概念證明。 你將不得不做大部分。 首先要做的是使它成為一個不錯的 CountDown 對象，其中包含方法和本地屬性，而不是全局屬性。

CountDown.startTimeLeft
CountDown.tickStart
CountDown.tick()
CountDown.start()
CountDown.finish()
CountDown.addTime()

將您的應用程序邏輯與股票代碼分開。

Answer 4

像這樣的東西可能有用嗎？

var n = 100;
setTimeout(countDown,1000);

function countDown(){
   n--;
   if(n > 0){
      setTimeout(countDown,1000);
   }
   $(".timer").html(n);
}

http://jsfiddle.net/gfdq8krd/

Answer 5

如果我理解你只是想倒計時？ 從10秒等等？ 我認為這個腳本會幫助你

<script>

<!-- 
//change below target URL to your own OTHERWISE DELETE
// this link will redirect you to the main page or the page you want
var targetURL="example.com" 
//change the second to start counting down from 
var countdownfrom=10

var currentsecond=document.redirect.redirect2.value=countdownfrom+1 
function countredirect(){ 
if (currentsecond!=1){ 
currentsecond-=1 
document.redirect.redirect2.value=currentsecond 
} 
else{ 
window.location=targetURL 
return 
} 
setTimeout("countredirect()",1000) 
}

countredirect() 
//--> 
</script>