从JavaScript Date对象提取日期字符串，不应用时区

Question

I want to do a straight conversion of a date string and cannot get the results I expect. I expect the below code to produce a date equal to the date portion of the original string, but it seems to apply a time during the instance creation.

var usageTime = new Date('2012-01-19T22:59:50-0800');
console.log(usageTime);  // Fri, 20 Jan 2012 06:59:50 GMT

dayOfUsage = usageTime.getFullYear()+'-'+(usageTime.getMonth()+1)+'-'+usageTime.getDate();
console.log(dayOfUsage);  // 2012-1-20

I expect a date of 2012-1-19. What is the right way to solve this?

Answer 1

您应该使用getUTC*()函数（ getUTCDate() ， getUTCHours()等）来获得没有时区偏移的时间。