how to get day from date object in javascript code example

Example 1: get day js

switch (new Date().getDay()) {
  case 0:
    day = "Sunday";
    break;
  case 1:
    day = "Monday";
    break;
  case 2:
    day = "Tuesday";
    break;
  case 3:
    day = "Wednesday";
    break;
  case 4:
    day = "Thursday";
    break;
  case 5:
    day = "Friday";
    break;
  case 6:
    day = "Saturday";
}

Example 2: javascript get day

var d = new Date();
var n = d.toLocaleString("en-US", { "weekday": "long" }); // Monday
n += "\n" + d.toLocaleString("en-US", { "weekday": "short" }); // Mon
n += "\n" + d.toLocaleString("en-US", { "weekday": "narrow" }); // M