Merge pull request #2909 from alphagov/date-now-polyfill

Fix JavaScript errors when entering text into the Character Count in IE8

CHANGELOG.md

@@ -93,6 +93,7 @@ We’ve made fixes to GOV.UK Frontend in the following pull requests:
 - [#2811: Use Element.id to get module id for accordion](https://github.com/alphagov/govuk-frontend/pull/2811)
 - [#2821: Avoid duplicated --error class on Character Count](https://github.com/alphagov/govuk-frontend/pull/2821)
 - [#2800: Improve Pagination component print styles](https://github.com/alphagov/govuk-frontend/pull/2800)
+- [#2909: Fix JavaScript errors when entering text into the Character Count in IE8](https://github.com/alphagov/govuk-frontend/pull/2909)
 
 ## 4.3.1 (Patch release)
 

src/govuk/components/character-count/character-count.mjs

@@ -1,3 +1,4 @@
+import '../../vendor/polyfills/Date/now.mjs'
 import '../../vendor/polyfills/Function/prototype/bind.mjs'
 import '../../vendor/polyfills/Event.mjs' // addEventListener and event.target normalisation
 import '../../vendor/polyfills/Element/prototype/classList.mjs'

src/govuk/vendor/polyfills/Date/now.mjs

@@ -0,0 +1,13 @@
+(function(undefined) {
+
+    // Detection from https://github.com/Financial-Times/polyfill-library/blob/v3.111.0/polyfills/Date/now/detect.js
+    var detect = ('Date' in self && 'now' in self.Date && 'getTime' in self.Date.prototype)
+
+    if (detect) return
+
+    // Polyfill from https://polyfill.io/v3/polyfill.js?version=3.111.0&features=Date.now&flags=always
+    Date.now = function () {
+        return new Date().getTime();
+    };
+
+}).call('object' === typeof window && window || 'object' === typeof self && self || 'object' === typeof global && global || {});