js new Date()實(shí)例測試
js new Date() 測試
var t = new Date().toString(); //t = "Thu Oct 31 2019 11:36:57 GMT+0800 (中國標(biāo)準(zhǔn)時(shí)間)" var t1 = new Date(); var data_arry =[]; var that = new Date(); data_arry.push(that.constructor()); // Thu Oct 31 2019 11:50:26 GMT+0800 (中國標(biāo)準(zhǔn)時(shí)間)" data_arry.push(that.getDate()); //31 data_arry.push(that.getDay()); // 4 data_arry.push(that.getFullYear()); //2019 data_arry.push(that.getHours()); // 11 data_arry.push(that.getMilliseconds()); // 401 data_arry.push(that.getMinutes()); // 50 data_arry.push(that.getMonth()); //9 data_arry.push(that.getSeconds()); //26 data_arry.push(that.getTime()); //1572493826401 data_arry.push(that.getTimezoneOffset()); //-480 data_arry.push(that.getUTCDate()); //31 data_arry.push(that.getUTCDay()); data_arry.push(that.getUTCFullYear()); data_arry.push(that.getUTCHours()); data_arry.push(that.getUTCMilliseconds()); data_arry.push(that.getUTCMinutes()); data_arry.push(that.getUTCMonth()); data_arry.push(that.getUTCSeconds()); data_arry.push(that.getYear()); data_arry.push(that.setDate()); data_arry.push(that.setFullYear()); data_arry.push(that.setHours()); data_arry.push(that.setMilliseconds()); data_arry.push(that.setMinutes()); data_arry.push(that.setMonth()); data_arry.push(that.setSeconds()); data_arry.push(that.setTime()); data_arry.push(that.setUTCDate()); data_arry.push(that.setUTCFullYear()); data_arry.push(that.setUTCHours()); data_arry.push(that.setUTCMilliseconds()); data_arry.push(that.setUTCMinutes()); data_arry.push(that.setUTCMonth()); data_arry.push(that.setUTCSeconds()); data_arry.push(that.setYear()); data_arry.push(that.toDateString()); data_arry.push(that.toGMTString()); //data_arry.push(that.toISOString()); 報(bào)錯(cuò) data_arry.push(that.toJSON()); data_arry.push(that.toLocaleDateString()); data_arry.push(that.toLocaleString()); data_arry.push(that.toLocaleTimeString()); data_arry.push(that.toString()); data_arry.push(that.toTimeString()); data_arry.push(that.toUTCString()); data_arry.push(that.valueOf());
函數(shù)
function get_nowtime() { var date = new Date(); return (date.getFullYear() + '-' + (date.getMonth() + 1) + '-' + date.getDate()); } console.log(get_nowtime());
擴(kuò)展閱讀:
JS獲取當(dāng)前時(shí)間戳的方法-JavaScript 獲取當(dāng)前時(shí)間戳
JavaScript 獲取當(dāng)前時(shí)間戳:
第一種方法:
var timestamp =Date.parse(new Date());
結(jié)果:1280977330000
第二種方法:
var timestamp =(new Date()).valueOf();
結(jié)果:1280977330748
第三種方法:
var timestamp=new Date().getTime();
結(jié)果:1280977330748
第一種:獲取的時(shí)間戳是把毫秒改成000顯示,
第二種和第三種是獲取了當(dāng)前毫秒的時(shí)間戳。
我和同事在用js實(shí)現(xiàn)一個(gè)顯示出分析數(shù)據(jù)所剩大概時(shí)間的過程中,時(shí)間總是變給0,結(jié)果很怪異,最后發(fā)現(xiàn)獲取時(shí)間的時(shí)候用的是Date.parse(newDate())獲取的時(shí)間戳把毫秒改成了000顯示,所以時(shí)間差計(jì)算的不準(zhǔn)確。
可以用第二種或第三種方法計(jì)算時(shí)間差。
js中單獨(dú)調(diào)用new Date(),例如document.write(new Date());
顯示的結(jié)果是:Mar 31 10:10:43 UTC+0800 2012 這種格式的時(shí)間
但是用new Date() 參與計(jì)算會(huì)自動(dòng)轉(zhuǎn)換為從1970.1.1開始的毫秒數(shù)
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