Date.getTime（）不是Typescript中的函数

Question

我在Typescript中有以下代码：

var period = self.getPeriod(someObject.createdTime);

//createdTime is of the type Date


getPeriod(date: Date){
  let today = new Date();
  today.getTime(); // works fine
  date.getTime(); // date.gettime() is not a function

  //rest of the code removed 

}

我在做什么错？如果我尝试在someObject.createdTime.ToUTCString（）中传递字符串，则会抛出createdTime.toUTCString（）不是函数。

Answer 1

var period = self.getPeriod(new Date());

getPeriod(date: Date){
  let today = new Date();
  today.getTime(); 
  date.getTime(); 
}