javascript - 如何使用存储在数组中的字符串长度在 Javascript 中使用倒计时

Question

    var allQuestionsArray = ["question1 asffdsdsfd","question2 asdffffsd","question3 asddda","question ajsdjj 4"];
    var loop = [];
    $.each(allQuestionsArray, function (index, key) {
    loop = key.length;
    timeOut(loop);

    setTimeout(function () {
      $(#question-' + index + '-section').fadeOut(),
      $('#question-' + index + '-section').fadeIn();
    }, (loop * 1000));
});

function startTimer(duration, display) {
                    console.log(duration);
                    var start = Date.now(),
                        diff,
                        minutes,
                        seconds;
                    function timer() {
                        // get the number of seconds that have elapsed since 
                        // startTimer() was called
                        if(duration <= 0){

                            display.textContent = "00:00";
                        }else{
                        diff = duration - (((Date.now() - start) / 1000) | 0);
                        //console.log(diff);

                        // does the same job as parseInt truncates the float

                        minutes = (diff / 60) | 0;
                        seconds = (diff % 60) | 0;

                        minutes = minutes < 10 ? "0" + minutes : minutes;
                        seconds = seconds < 10 ? "0" + seconds : seconds;

                        display.textContent = minutes + ":" + seconds;

                        if (diff <= 0) {
                            start = Date.now() + 1000;
                        }
                        }
                    };

                    timer();
                    setInterval(timer, 1000);
                }
                function timeOut(limit) {

                    display = document.querySelector('#time');
                    startTimer(limit, display);

                }

1-我对这段代码的期望是它应该生成一个倒计时并且需要隐藏所有问题部分，除了一个它应该工作到循环完成的问题部分。

2-我希望我的代码获取存储在数组中的每个字符串的长度并将其分配给计时器 == "timeOut(string.length)" 这就是我的意思。

3-问题是当代码执行时，计时器根据最后一个字符串的长度启动“question ajsdjj 4”不是从数组的第一个字符串开始。

我想在定时器完成时从数组的第一个字符串启动定时器，然后它必须移动到数组的第二个字符串，依此类推。

标签： javascriptarrayscountdown