javascript - javascript getHours() 不是函数

Question

我想为当前时间添加一个分钟偏移量并以 12 小时格式显示

var now = new Date();
var offset = 1000;
var timeOffset = now.setMinutes(now.getMinutes() + offset);
var hours = timeOffset.getHours();
var minutes = timeOffset.getMinutes();
var ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
hours = hours ? hours : 12; // the hour '0' should be '12'
minutes = minutes < 10 ? '0'+minutes : minutes;
var newTime = hours + ':' + minutes + ' ' + ampm;
console.log(newTime)

为什么要扔TypeError: dateTime.getHours is not a function？

标签： javascript

Answer 1

setMinutes在当前日期对象上设置分钟，以便now进行进一步计算。

var now = new Date();
var offset = 1000;
now.setMinutes(now.getMinutes() + offset);
var hours = now.getHours();
var minutes = now.getMinutes();
var ampm = hours >= 12 ? 'pm' : 'am';
hours = hours % 12;
hours = hours ? hours : 12; // the hour '0' should be '12'
minutes = minutes < 10 ? '0'+minutes : minutes;
var newTime = hours + ':' + minutes + ' ' + ampm;
console.log(newTime)