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How to convert time in javascript

coldplay.xixi
coldplay.xixiOriginal
2021-04-02 15:40:422999browse

javascript转换时间的方法:创建一个【util.js】文件,在里面重新封装一下Date的format方法,代码为【let date = new Date().Format("yyyy年M月dd日\tEEE\tHH:mm:ss")】。

How to convert time in javascript

本教程操作环境:windows7系统、javascript1.8.5版,DELL G3电脑。

javascript转换时间的方法:

创建一个util.js文件,在里面重新封装一下Date的format方法:

//Date的prototype 属性可以向对象添加属性和方法。   
Date.prototype.Format = function(fmt) {
var o = {
    "M+": this.getMonth() + 1, //月份         
    "d+": this.getDate(), //日         
    "h+": this.getHours() % 12 === 0 ? 12 : this.getHours() % 12, //小时         
    "H+": this.getHours(), //小时         
    "m+": this.getMinutes(), //分         
    "s+": this.getSeconds(), //秒         
    "q+": Math.floor((this.getMonth() + 3) / 3), //季度         
    "S": this.getMilliseconds() //毫秒         
};
var week = {
    "0": "\u65e5",
    "1": "\u4e00",
    "2": "\u4e8c",
    "3": "\u4e09",
    "4": "\u56db",
    "5": "\u4e94",
    "6": "\u516d"
};
if (/(y+)/.test(fmt)) {
    fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
}
if (/(E+)/.test(fmt)) {
    fmt = fmt.replace(RegExp.$1, ((RegExp.$1.length > 1) ? (RegExp.$1.length > 2 ? "\u661f\u671f" : "\u5468") : "") + week[this.getDay() + ""]);
}
for (var k in o) {
    if (new RegExp("(" + k + ")").test(fmt)) {
        fmt = fmt.replace(RegExp.$1, (RegExp.$1.length === 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
    }
}
return fmt;
};

具体调用的时候就可以变得很方便,想要什么格式就可以形成什么格式,例如 年月日 星期几 时分秒,做个简单的例子,如果有哪里看不明白可以评论,我看见会给你解释的。

let date = new Date().Format("yyyy年MM月dd日\tEEE\tHH:mm:ss");
        $("#date-now").html(date);

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