Textboxでその日の日付データを取得する

code:script.js

function getNow() {

var now = new Date();

var year = now.getFullYear();

var mon = now.getMonth()+1; //１を足すこと

var day = now.getDate();

const mond = ( '00' + mon ).slice( -2 );

const ret = ( '00' + day ).slice( -2 );

//出力用

var s = year + "-" + mond + "-" + ret;

return s;

}