Question

您知道一种生成每10分钟前进的日期数据并放入数组的好方法吗？


let dts:Dates = new array();

let dt: Date = new Date('2019-05-03T06:00:00');
let dt2: Date = new Date('2019-05-03T06:00:00');
let dt3: Date = new Date('2019-05-03T06:00:00');

dt.setMinutes(dt.getMinutes() + 10);
console.log(dt);
dt2.setMinutes(dt.getMinutes() + 10);
console.log(dt2);
dt3.setMinutes(dt2.getMinutes() + 10);
console.log(dt3);


while(dt.getTime()<= 6 ){ // I would like from 6:00 , 6:20 ... (7:00) Is it impossible to add 7:00?
dt.setMinutes(dt.getMinutes() + 10);
console.log(dt);
}

Answer 1

    var origDateObj = new Date();
    var updatedDateObj = new Date();

    //The 10 in the line below will determine the amount of time added.
    updatedDateObj.setTime(origDateObj.getTime() + (10 * 60 * 1000));

    console.log(updatedDateObj);

Answer 2

您有正确的想法。技巧是在循环中执行此操作，并在循环的每次迭代中创建Date的新实例：

const startDate = new Date('2019-05-03T06:00:00');
const numberOfItems = 12;

const dates = Array.from({ length: numberOfItems }, (_, i) => {
  const nextDate = new Date(startDate);
  nextDate.setMinutes(startDate.getMinutes() + i * 10);
  return nextDate;
});

console.log(dates.map(String));

您当然可以将其包装为适合您需要的函数：

function dateIncrements(startDate, incrementMinutes, numberOfItems) {
  return Array.from({ length: numberOfItems }, (_, i) => {
    const nextDate = new Date(startDate);
    nextDate.setMinutes(startDate.getMinutes() + i * incrementMinutes);
    return nextDate;
  });
}

const dates = dateIncrements(new Date('2019-05-03T06:00:00'), 10, 6);
console.log(dates.map(String));

Answer 3

您为什么不使用setInterval？在我看来，您可以使用本机方法使其变得更干净...

如何每十分钟获取一次日期数据

3 个答案: