Fix pages not loading on correct anchor

vuejs/vuepress#1499

Author: DoctorMcKay

src/.vuepress/config.js

@@ -16,7 +16,8 @@ module.exports = {
 	head: [
 		['meta', {name: 'theme-color', content: '#3eaf7c'}],
 		['meta', {name: 'apple-mobile-web-app-capable', content: 'yes'}],
-		['meta', {name: 'apple-mobile-web-app-status-bar-style', content: 'black'}]
+		['meta', {name: 'apple-mobile-web-app-status-bar-style', content: 'black'}],
+		['script', {src: '/js/fix-scroll-to-hash.js'}]
 	],
 
 	/**

src/.vuepress/public/js/fix-scroll-to-hash.js

@@ -0,0 +1,13 @@
+// https://github.com/vuejs/vuepress/issues/1499#issuecomment-663807385
+
+window.onload = function() {
+	requestAnimationFrame(function() {
+		if (location.hash) {
+			const element = document.getElementById(location.hash.slice(1));
+
+			if (element) {
+				element.scrollIntoView();
+			}
+		}
+	})
+};