Js distal end with a write function output the current time, the format of yyyy-mm-dd hh: mm: ss

• Demand Description: Write a function of the output of the current time, the format of yyyy-mm-dd hh: mm : ss
• Realization of ideas:
  • Method One: First get the time of day, then call toLocaleString method, the time of day to convert to a string. Then replace method to replace the desired format.
  • Method two: First, get the current time, then getFullYear, getMonth, getDate, getHours, getMinutes, getSeconds methods, respectively, acquires the year, month, day, hour, and then according to the desired format string to be spliced ​​into
• Implementation code:

method one:

<! DOCTYPE HTML > 
< HTML lang = "EN" > 
< head > 
    < Meta charset = "UTF-. 8" > 
    < title > output current date and time format specified </ title > 
</ head > 
< body > 
< Script type = "text / JavaScript" > 
    function getDate () { 
        the let Today =  new new a Date ();
         // the console.log (Today): Wed Jul-2019 17:48. 17:53 GMT + 0800 (China Standard Time) 
        the let DATE = today.toLocaleString().replace(/下午/, " ");
        // console.log(today.toLocaleString()):  2019/7/17 下午5:48:53 
        return date;
    }
    document.write(getDate());
    // date: 2019/7/17 5:48:53
</script>
</body>
</html>

 

Method Two:

<! DOCTYPE HTML > 
< HTML lang = "EN" > 
< head > 
    < Meta charset = "UTF-. 8" > 
    < title > output current date and time format specified </ title > 
</ head > 
< body > 
< Script type = "text / JavaScript" > 
    function getDate () { 
        the let Today =  new new a Date ();
         // the console.log (Today): Wed Jul-2019 17:48. 17:53 GMT + 0800 (China Standard Time) 
        the let newDate =today.getFullYear () +  ' / '  + (today.getMonth () +  . 1 ) +  ' / '  + today.getDate () +  '  '  + today.getHours () +  ' : '  + today.getMinutes () +  ' : '  + today.getSeconds ();
         // the getMonth method returns a number between 0-11, representing 1--12 month, calendar month and to corresponds to the time required +1. 
        return newDate; 
    } 
    document.write (getDate ()); 
</ Script > 

</ body >
</html>

•  Renderings: