用Date对象就是一个不可序列化地值类型,尽管它在ISO的标准可以被打印成字符串,JSON.parse仅仅把它解释成一个字符串(string),而不是Date对象。 深拷贝的一些警告 更复杂的例子,你可以使用HTML5的一个新克隆算法,结构化克隆(structured clone)。很遗憾,在细这篇文章的时候,它仍然被限制于确定的类型,但是它
4.1.2 实现toISODate方法 代码语言:javascript 代码运行次数:0 运行 AI代码解释 Date.prototype.toISODate = function() { const year = this.getFullYear(); const month = String(this.getMonth() + 1).padStart(2, '0'); const day = String(this.getDate()).padStart(2, '0'); return `${year...
第一种可以马上想到的是使用Date对象的api方法,获得年份,月份,天,小时,分钟和秒数,就可以拼出来。从Date.prototype.toISOString方法稍微改造就可以了: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 if (!Date.prototype.toISOString) { (function() { function pad(number) { if (number < 10) { return...
Get today's date as a readable string: constd =newDate(); lettext = d.toDateString(); Try it Yourself » Description The toDateString() method returns the date (not the time) of a date object as a string. Browser Support toDateString()is an ECMAScript1 (JavaScript 1997) feature. ...
Get a date as string, using locale conventions: constd =newDate(); lettext = d.toLocaleString(); Try it Yourself » Description The toLocaleString() method returns a Date object as a string, using locale settings. The default language depends on the locale setup on your computer. ...
d = Date + ""; console.log(d); //返回字符串 "function Date () { [ native code ] } " ② 如果是内置静态函数,则返回 [object Class] 格式的字符串表示。 m = Math +""; console.log(m); //返回字符串 "[object Math]" 5) 如果把对象实例转换为字符串,则返回的字符串会根据不同类型或...
一、Date 原型对象上的方法 JavaScript Object.getOwnPropertyNames(Date.prototype)//注意这些方法都是不可枚举的 JavaScript ["constructor","toString","toDateString","toTimeString","toISOString","toUTCString","toGMTString","getDate","setDate","getDay","getFullYear","setFullYear","getHours","setHours","...
The toString() method is used to convert a date to a string.VersionImplemented in JavaScript 1.1SyntaxtoString()ParameterNone.Example:In the following web document toString() method converts the current date to string.<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://...
const dateFromAPI = "2016-01-02T12:30:00Z";const localDate = new Date(dateFromAPI);const localDateString = localDate.toLocaleDateString(undefined, {day: 'numeric',month: 'short',year: 'numeric',});const localTimeString = localDate.toLocaleTimeString(undefined, {hour: '2-digit',minute: ...
//语法stringObject.substr(startPos,length) //注意:如果参数startPos是负数,从字符串的尾部开始算起的位置。也就是说,-1 指字符串中最后一个字符,-2 指倒数第二个字符,以此类推。//如果startPos为负数且绝对值大于字符串长度,startPos为0。 //例子<script type="text/javascript">varmystr="I love JavaScri...