Datetime Convertion

My datetime and datepicket conversions

by DiegoPacheco

HTML

<body>
<button id="bt_ms" >ms</button>
<button id="bt_dt">dt</button>
<button id="bt_MStoDT">ms to dt</button>
<br><br>
<input id="date_input" type="datetime-local">
<p id="demo"></p>
</body>

CSS

button{
    margin:15px
    }

JavaScript

//methods
var ms,dt,MStoDT,defaultDateInput;

ms = ()=> Date.now();

dt = ()=> new Date().toLocaleString();

MStoDT =ms => {
    var d = new Date();
    d.setTime(ms);
    return d.toLocaleString();
}

defaultDateInput = ()=>document.getElementById('date_input').valueAsNumber=Date.now();

//test
var id = el=>document.getElementById(el);
var show = str=>document.getElementById('demo').innerHTML=str;


defaultDateInput();
id('bt_ms').onclick = ()=>show(ms());
id('bt_dt').onclick = ()=>show(dt());
id('bt_MStoDT').onclick = ()=>show(MStoDT(ms()));