javascript - Switch 语句 (javaScript) 将仅显示 else 条件

Question

我试图在英国的某些时间在网络应用程序中显示某些字符串。这造成了多个问题，首先确保应用程序在英国时间显示这些项目，而不仅仅是用户所在的位置，我想我已经解决了这个问题。

我遇到的问题是我的 switch 只显示 else 语句，并且似乎忽略了 else if。这些案例工作正常。

我确信这很简单，但我看不到。

window.onload = function name() {
  var date = new Date();
  var d = date.getUTCDay();
  var t = new Date()
  var h = t.getUTCHours();
  var adjtime = (((new Date().getTimezoneOffset * -1) / 60) + h);
  var shows = [
    'String 1',
    'String 2',
    'String 3',
    'String 4',
    'String 5',
    'String 6',
    'String 7',
    'String 8',
    'String 9',
  ];
  var currentShow;
  var nextShow;

  switch (d) {
    case 0:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[5];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[5];
        nextShow = shows[6];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[6];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[3];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[1];
      }
      break;
    case 1:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[3];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[7];
      }
      break;
    case 2:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[4];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[1];
      }
      break;
    case 3:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[3];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[1];
      }
      break;
    case 4:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[4];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[7];
      }
      break;
    case 5:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[1];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[1];
        nextShow = shows[2];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[2];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[3];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[3];
      }
      break;
    case 6:
      if (adjtime >= 00 && adjtime <= 02) {
        currentShow = shows[0];
        nextShow = shows[3];
      } else if (adjtime >= 02 && adjtime <= 03) {
        currentShow = shows[3];
        nextShow = shows[4];
      } else if (adjtime >= 03 && adjtime <= 04) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 04 && adjtime <= 10) {
        currentShow = shows[0];
        nextShow = shows[7];
      } else if (adjtime >= 10 && adjtime <= 11) {
        currentShow = shows[7];
        nextShow = shows[8];
      } else if (adjtime >= 11 && adjtime <= 12) {
        currentShow = shows[8];
        nextShow = shows[0];
      } else if (adjtime >= 12 && adjtime <= 17) {
        currentShow = shows[0];
        nextShow = shows[4];
      } else if (adjtime >= 17 && adjtime <= 18) {
        currentShow = shows[4];
        nextShow = shows[0];
      } else if (adjtime >= 18 && adjtime <= 20) {
        currentShow = shows[0];
        nextShow = shows[5];
      } else if (adjtime >= 20 && adjtime <= 21) {
        currentShow = shows[5];
        nextShow = shows[6];
      } else if (adjtime >= 21 && adjtime <= 22) {
        currentShow = shows[6];
        nextShow = shows[0];
      } else {
        currentShow = shows[0];
        nextShow = shows[5];
      }
      break;
  }
  document.getElementById("current-show").innerHTML = currentShow;
  document.getElementById("next-show").innerHTML = nextShow;
}

<p id="current-show"></p>
<p id="next-show"></p>

Answer 1

getTimezoneOffset是方法而不是属性，需要调用getTimezoneOffset()来获取值，

var adjtime = (((new Date().getTimezoneOffset() * -1) / 60) + h);