js获取指定小时日期格式化

etangyushan 2021-08-26 原文

不得不感叹一下，聪明的程序员写的代码真是让人惊奇

找了一圈格式化代码的方式，下面的这个使用了一个 slice 函数，真是厉害

https://stackoverflow.com/questions/42358990/format-date-received-in-milliseconds-in-yyyy-mm-dd-hh-mm-in-jquery-javascript

不过里面的一行代码解决，但没有完全格式化为 yyyyMMddHHmmss 的格式自己做了一些修改：

    //获取明天指定小时时间
    function getTomorrowtimeFormat (hour){
        var mydate = new Date();    
        mydate.setHours(hour);
        mydate.setDate(mydate.getDate()+1);
       
        var year = mydate.getFullYear();
        var month = mydate.getMonth()+1; 
        var day = mydate.getDate(); 
        var hour = mydate.getHours();
        var minutes = mydate.getMinutes();
        var seconds = mydate.getSeconds();
        var timestr = year + \'\' +
                    (\'0\' + month).slice(-2)+ \'\' +
                    (\'0\' + day).slice(-2)+ \'\' +
                    (\'0\' + hour).slice(-2)+ \'\' +
                    (\'0\' + minutes).slice(-2)+ \'\'+
                    (\'0\' + seconds).slice(-2);

        return timestr;
    }
    //获取今天指定小时时间
    function getTodaytimeFormat (hour){
        var mydate = new Date();    
        mydate.setHours(hour);

        var year = mydate.getFullYear();    
        var month = mydate.getMonth()+1; 
        var day = mydate.getDate(); 
        var hour = mydate.getHours();
        var minutes = mydate.getMinutes();
        var seconds = mydate.getSeconds();
        var timestr = year + \'\' +
                    (\'0\' + month).slice(-2)+ \'\' +
                    (\'0\' + day).slice(-2)+ \'\' +
                    (\'0\' + hour).slice(-2)+ \'\' +
                    (\'0\' + minutes).slice(-2)+ \'\'+
                    (\'0\' + seconds).slice(-2);
        return timestr;
    }