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JS 参考手册

JS 参考手册(字母排序)

JavaScript

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Window

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HTML DOM

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Web APIs

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HTML 对象

<a> <abbr> <address> <area> <article> <aside> <audio> <b> <base> <bdo> <blockquote> <body> <br> <button> <canvas> <caption> <cite> <code> <col> <colgroup> <datalist> <dd> <del> <details> <dfn> <dialog> <div> <dl> <dt> <em> <embed> <fieldset> <figcaption> <figure> <footer> <form> <head> <header> <h1> - <h6> <hr> <html> <i> <iframe> <img> <ins> <input> button <input> checkbox <input> color <input> date <input> datetime <input> datetime-local <input> email <input> file <input> hidden <input> image <input> month <input> number <input> password <input> radio <input> range <input> reset <input> search <input> submit <input> text <input> time <input> url <input> week <kbd> <label> <legend> <li> <link> <map> <mark> <menu> <menuitem> <meta> <meter> <nav> <object> <ol> <optgroup> <option> <output> <p> <param> <pre> <progress> <q> <s> <samp> <script> <section> <select> <small> <source> <span> <strong> <sub> <summary> <sup> <table> <tbody> <td> <tfoot> <th> <thead> <tr> <textarea> <time> <title> <track> <u> <ul> <var> <video>

JavaScript new Date 方法


示例

// 创建日期
const time = new Date();
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更多示例如下!


描述

new Date()构造函数创建一个新的Date对象。


语法

new Date(date)

参数

参数 描述
date 可选。
时间戳(毫秒)或日期时间字符串。

返回值

类型 描述
Date 一个新的 Date 对象。


更多示例

创建(实例化)新 Date 对象有五种方法:

示例

创建一个包含当前日期和时间的新日期对象:

// 创建一个日期对象
const time = new Date();
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示例

使用 ISO 表示法创建新日期:

const time = new Date(dateString);
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示例

根据现有日期创建新日期:

const time2 = new Date(time1);
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示例

使用从 1970 年 1 月 1 日开始的毫秒数创建一个新日期:

const time = new Date(milliseconds);
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示例

使用 new Date(7 个数字) 创建一个具有指定日期和时间的日期对象:

const time = new Date(year, month, day, hours, minutes, seconds, milliseconds);
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浏览器支持

new Date() 是 ECMAScript 1(JavaScript 1997)的特性。

所有浏览器均支持此特性:

Chrome Edge Firefox Safari Opera

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