JS 在 IE 上无法正常运行，但在 Chrome 中运行完美

Question

我正在尝试创建一个打印出今天日期的 JS，它与 Chrome 完美配合，但不在 Internet Explorer 上。

我不确定 Internet Explorer 上没有什么 JS function？ 由于某些原因，我的设备仍然默认使用 Internet Explorer，并且尝试找到解决方法非常令人沮丧。

//get today's date & month
const today = new Date();
const year = today.getFullYear();
const month = today.getMonth() + 1;
const date = today.getDate();

//get day of the week
  var weekday = new Array(7);
  weekday[0] = "Sunday";
  weekday[1] = "Monday";
  weekday[2] = "Tuesday";
  weekday[3] = "Wednesday";
  weekday[4] = "Thursday";
  weekday[5] = "Friday";
  weekday[6] = "Saturday";
  var dayOfWeek = weekday[today.getDay()];
const todayDate = month+ "/"+ date + "/" + year;
document.querySelector(".dayOfWeek").innerHTML= dayOfWeek ;
document.querySelector(".sdDate").innerHTML= todayDate;

//get present's month
var monthOfYear = new Array(12);
  monthOfYear[1] = "January";
  monthOfYear[2] = "February";
  monthOfYear[3] = "March";
  monthOfYear[4] = "April";
  monthOfYear[5] = "May";
  monthOfYear[6] = "June";
  monthOfYear[7] = "July";
  monthOfYear[8] = "August";
  monthOfYear[9] = "September";
  monthOfYear[10] = "October";
  monthOfYear[11] = "November";
  monthOfYear[12] = "December";
  var monthOfYearprt = monthOfYear[month];
  document.querySelector(".bdMonth").innerHTML= monthOfYearprt;

  

<div id="specialDay">
            <div class="todayDate">
              <span class="dayOfWeek"></span>
              <br>
              <span class="sdDate"></span>
            </div>
           
          
        </div>

Answer 1

尝试使用var而不是const声明您的 var。

就目前而言， const 并未得到 IE 的广泛支持。

基本上，如果您在IE11之外测试 IE，那么您的代码可能无法按预期工作。