如何在JavaScript中从这个日期对象生成月份的名称(例如:10月/ 10月)?
var objDate = new Date("10/11/2009");
如何在JavaScript中从这个日期对象生成月份的名称(例如:10月/ 10月)?
var objDate = new Date("10/11/2009");
当前回答
对我来说,这是最佳解,
对于TypeScript也一样
const env = process.env.REACT_APP_LOCALE || 'en';
const namedMonthsArray = (index?: number): string[] | string => {
const months = [];
for (let month = 0; month <= 11; month++) {
months.push(
new Date(new Date('1970-01-01').setMonth(month))
.toLocaleString(env, {
month: 'long',
})
.toString(),
);
}
if (index) {
return months[index];
}
return months;
};
输出是
["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
其他回答
这是另一个,支持本地化:)
Date.prototype.getMonthName = function(lang) {
lang = lang && (lang in Date.locale) ? lang : 'en';
return Date.locale[lang].month_names[this.getMonth()];
};
Date.prototype.getMonthNameShort = function(lang) {
lang = lang && (lang in Date.locale) ? lang : 'en';
return Date.locale[lang].month_names_short[this.getMonth()];
};
Date.locale = {
en: {
month_names: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
month_names_short: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
}
};
然后,您可以轻松地添加对其他语言的支持:
Date.locale.fr = {month_names: [...]};
文档。写(新日期()。toLocaleString('en-us',{月:'长',年:'数字',日:'数字'}))
这是一种不依赖于硬编码数组并支持多个区域设置的方法。
如果你需要一个完整的数组:
var monthsLocalizedArray = function(locale) {
var result = [];
for(var i = 0; i < 12; i++) {
result.push(new Date(2010,i).toLocaleString(locale,{month:"long"}));
}
return result;
};
用法:
console.log(monthsLocalizedArray('en')); // -> ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
console.log(monthsLocalizedArray('bg')); // -> ["януари", "февруари", "март", "април", "май", "юни", "юли", "август", "септември", "октомври", "ноември", "декември"]
如果你只需要一个选定的月份(更快):
var monthLocalizedString = function(month, locale) {
return new Date(2010,month).toLocaleString(locale,{month:"long"});
};
用法:
console.log(monthLocalizedString(1, 'en')); // -> February
console.log(monthLocalizedString(1, 'bg')); // -> февруари
console.log(monthLocalizedString(1, 'de')); // -> Februar
经过测试,在Chrome和IE 11上运行良好。在mozilla上需要做一些修改,因为它返回整个日期。
对我来说,这是最佳解,
对于TypeScript也一样
const env = process.env.REACT_APP_LOCALE || 'en';
const namedMonthsArray = (index?: number): string[] | string => {
const months = [];
for (let month = 0; month <= 11; month++) {
months.push(
new Date(new Date('1970-01-01').setMonth(month))
.toLocaleString(env, {
month: 'long',
})
.toString(),
);
}
if (index) {
return months[index];
}
return months;
};
输出是
["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"]
我的最佳解决方案如下:
var dateValue = Date();
var month = dateValue.substring(4,7);
var date = dateValue.substring(8,10);
var year = dateValue.substring(20,24);
var finaldateString = date+"-"+month+"-"+year;