Add theme assets;

public/assets/js/bootstrap-maxlength.js

@@ -0,0 +1,35 @@
+// npm package: bootstrap-maxlength
+// github link: https://github.com/mimo84/bootstrap-maxlength
+
+$(function() {
+  'use strict';
+
+  $('#defaultconfig').maxlength({
+    warningClass: "badge mt-1 bg-success",
+    limitReachedClass: "badge mt-1 bg-danger"
+  });
+
+  $('#defaultconfig-2').maxlength({
+    alwaysShow: true,
+    threshold: 20,
+    warningClass: "badge mt-1 bg-success",
+    limitReachedClass: "badge mt-1 bg-danger"
+  });
+
+  $('#defaultconfig-3').maxlength({
+    alwaysShow: true,
+    threshold: 10,
+    warningClass: "badge mt-1 bg-success",
+    limitReachedClass: "badge mt-1 bg-danger",
+    separator: ' of ',
+    preText: 'You have ',
+    postText: ' chars remaining.',
+    validate: true
+  });
+
+  $('#maxlength-textarea').maxlength({
+    alwaysShow: true,
+    warningClass: "badge mt-1 bg-success",
+    limitReachedClass: "badge mt-1 bg-danger"
+  });
+});