我正在使用Express编写一个简单的时间戳API。基本上,当用户输入“普通”格式的日期时,将显示一个带有Unix格式和普通格式的JSON对象。这是我的代码的相关部分:
timeRouter.route('/:time')
.get((req, res, next) => {
let time = req.params.time;
let unixTime = Number(time);
if (unixTime) {
res.json({'unix': unixTime, 'natural': moment.unix(unixTime).format('MMMM D, YYYY')});
} else {
let timeDate = new Date(time);
console.log(`timeDate: ${timeDate}`);
let isoTimeDate = timeDate.toISOString();
console.log(`isoTimeDate: ${isoTimeDate}`);
if (moment(isoTimeDate).isValid()){
res.json({'unix': Number(moment(isoTimeDate).format('X')), 'natural': moment(isoTimeDate).format('MMMM D, YYYY')});
} else {
res.json({'unix': null, 'natural': null});
}
}
});
如果我输入URL“localhost:3000/January 10 2015”,API会按预期工作并返回以下结果:
{
"unix": 1421712000,
"natural": "January 20, 2015"
}
问题在于我在控制台中得到了以下内容:
前两行的输出结果非常清晰,因为这是代码中两个console.log语句的结果。奇怪的是,在此之后,变量timeDate: Tue Jan 20 2015 00:00:00 GMT+0000 (UTC)
isoTimeDate: 2015-01-20T00:00:00.000Z
timeDate: Invalid Date
RangeError: Invalid time value
at /app/routes/timeRouter.js:19:34
at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
at next (/app/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/app/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/app/node_modules/express/lib/router/layer.js:95:5)
at /app/node_modules/express/lib/router/index.js:281:22
at param (/app/node_modules/express/lib/router/index.js:354:14)
at param (/app/node_modules/express/lib/router/index.js:365:14)
at Function.process_params (/app/node_modules/express/lib/router/index.js:410:3)
at next (/app/node_modules/express/lib/router/index.js:275:10)
timeDate
再次被记录到控制台,但此时其值为无效日期,并导致了错误消息。第19行代码是:let isoTimeDate = timeDate.toISOString();
有人知道这里发生了什么吗?
new Date(time)
之前,您应该记录time
的值,以查看传递给Date
构造函数的确切内容。 - mscdex