JSFiddle - React, Tailwind, and code Playground
JavaScript
var str = "/Date(1396505647431)/";
alert(str.match(/Date\(\d+\)/)[0]);
var time = new Date(+str.match(/\d+/)[0]);
alert(time)
alert(time.toLocaleTimeString());
var str = "/Date(1396505647431)/";
alert(str.match(/Date\(\d+\)/)[0]);
var time = new Date(+str.match(/\d+/)[0]);
alert(time)
alert(time.toLocaleTimeString());