js 转utc时间

// 创建一个Date对象，表示当前的本地时间
let localDate = new Date();

// 获取UTC时间的各个组件
let utcYear = localDate.getUTCFullYear();
let utcMonth = localDate.getUTCMonth() + 1; // 月份从0开始，所以需要加1
let utcDate = localDate.getUTCDate();
let utcHours = localDate.getUTCHours();
let utcMinutes = localDate.getUTCMinutes();
let utcSeconds = localDate.getUTCSeconds();
let utcMilliseconds = localDate.getUTCMilliseconds();

// 将UTC时间组件拼接成字符串
let utcTimeString = `${utcYear}-${utcMonth.toString().padStart(2, '0')}-${utcDate.toString().padStart(2, '0')} ` +
                    `${utcHours.toString().padStart(2, '0')}:${utcMinutes.toString().padStart(2, '0')}:${utcSeconds.toString().padStart(2, '0')}.${utcMilliseconds.toString().padStart(3, '0')}`;

console.log("UTC Time:", utcTimeString);

let localDate = new Date();
let utcTimeString = localDate.toISOString();

console.log("UTC Time:", utcTimeString);

// 假设有一个本地时间字符串
let localTimeString = "2023-04-01T12:00:00";

// 创建Date对象
let localDate = new Date(localTimeString);

// 获取UTC时间字符串
let utcTimeString = localDate.toISOString();

console.log("UTC Time:", utcTimeString);