Home/ Questions/Q 1108421
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-17T02:04:49+00:00

var dateRegex = /\/Date\((\d+)\)\//g; // [0-9] instead of \d does not help. dateRegex.test(/Date(1286443710000)/); //

  • 0
var dateRegex = /\/Date\((\d+)\)\//g;    // [0-9] instead of \d does not help.
dateRegex.test("/Date(1286443710000)/"); // true
dateRegex.test("/Date(1286445750000)/"); // false

Both Chrome and Firefox JavaScript consoles confirm. What the hell, guys?

Edit: even simpler test case:

var dateRegex = /Date\(([0-9]+)\)/g;
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // false
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // false
dateRegex.test("Date(1286445750000)"); // true

This shows that it alternates true/false every time…

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    In your case remove the g modifier from the end, for example:

    var dateRegex = /\/Date\((\d+)\)\//;
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // true
dateRegex.test("Date(1286445750000)"); // true

    It’s a bug with the way regexes are implemented in ECMAScript 3, there’s a great post on the details here.

    • 0