diff --git a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
index d5156eeb5cb..236705d84f4 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/JavascriptTestBase.php
@@ -64,6 +64,38 @@ protected function tearDown() {
   }
 
   /**
+   * {@inheritdoc}
+   */
+  protected function getDefaultDriverInstance() {
+    parent::getDefaultDriverInstance();
+
+    // Allow for overriding with setting specific to JavaScript tests.
+    if ($arg_json = getenv('MINK_DRIVER_ARGS_JS')) {
+      $this->minkDefaultDriverArgs = json_decode($arg_json, TRUE);
+    }
+
+    // Allow for overriding the driver class for JavaScript tests.
+    if ($minkDriverClass = getenv('MINK_DRIVER_CLASS_JS')) {
+      if (class_exists($minkDriverClass)) {
+        $this->minkDefaultDriverClass = $minkDriverClass;
+      }
+      else {
+        throw new \InvalidArgumentException("Can't instantiate provided $minkDriverClass class by environment as default driver class.");
+      }
+    }
+
+    if (is_array($this->minkDefaultDriverArgs)) {
+      // Use ReflectionClass to instantiate class with received params.
+      $reflector = new \ReflectionClass($this->minkDefaultDriverClass);
+      $driver = $reflector->newInstanceArgs($this->minkDefaultDriverArgs);
+    }
+    else {
+      $driver = new $this->minkDefaultDriverClass();
+    }
+    return $driver;
+  }
+
+  /**
    * Asserts that the element with the given CSS selector is visible.
    *
    * @param string $css_selector