如何将Date对象格式化为字符串?


当前回答

试试看:

函数init(){var d=新日期();var day=d.getDate();var x=d.toDateString().substr(4,3);var year=d.getFullYear();document.querySelector(“#mydate”).innerHTML=day+'-'+x+'-'+年;}window.onload=init;<div id=“mydate”></div>

其他回答

截至2019年,您似乎可以使用LocaleDateString仅返回某些部分,然后您可以根据需要加入它们:

var date = new Date();

console.log(date.toLocaleDateString("en-US", { day: 'numeric' }) 
            + "-"+ date.toLocaleDateString("en-US", { month: 'short' })
            + "-" + date.toLocaleDateString("en-US", { year: 'numeric' }) );

> 16-Nov-2019

console.log(date.toLocaleDateString("en-US", { month: 'long' }) 
            + " " + date.toLocaleDateString("en-US", { day: 'numeric' }) 
            + ", " + date.toLocaleDateString("en-US", { year: 'numeric' }) );

> November 16, 2019

简短、广泛兼容的方法:

function formatDate(date) {
    date.toISOString()
    .replace(/^(\d+)-(\d+)-(\d+).*$/, // Only extract Y-M-D
        function (a,y,m,d) {
            return [
                d, // Day
                ['Jan','Feb','Mar','Apr','May','Jun',  // Month Names
                'Jul','Ago','Sep','Oct','Nov','Dec']
                [m-1], // Month
                y  // Year
            ].join('-') // Stitch together
        })
}

或者,作为单行:

date.toISOString().replace(/^(\d+)-(\d+)-(\d+)T(\d+):(\d+):(\d+).(\d+)Z$/, function (a,y,m,d) {return [d,['Jan','Feb','Mar','Apr','May','Jun','Jul','Ago','Sep','Oct','Nov','Dic'][m-1],y].join('-')})

将jQuery UI插件添加到页面:

function DateFormate(dateFormate, datetime) {
    return $.datepicker.formatDate(dateFormate, datetime);
};

Use:

thisDate = new Date(parseInt(jsonDateString.replace('/Date(', '')));
formattedDate = (thisDate.getMonth() + 1) + "/" + (thisDate.getDate()+1) + "/" + thisDate.getFullYear();

这采用JSON日期“/date(1429573751663)/”,并生成格式化字符串:

"4/21/2015"

一行中请求的格式-没有库和Date方法,只有正则表达式:

var d = (new Date()).toString().replace(/\S+\s(\S+)\s(\d+)\s(\d+)\s.*/,'$2-$1-$3');
// date will be formatted as "14-Oct-2015" (pass any date object in place of 'new Date()')

在我的测试中,这在主要浏览器(Chrome、Safari、Firefox和IE)中可靠地工作。正如@RobG所指出的,Date.protype.toString()的输出依赖于实现,因此对于国际或非浏览器实现,只需测试输出,以确保它在JavaScript引擎中正常工作。您甚至可以添加一些代码来测试字符串输出,并在执行正则表达式替换之前确保其与预期匹配。