ENGCOM-2225: [Backport] Small refactoring to better code readability #16632

 - Merge Pull Request #16632 from ronak2ram/magento2:2.1-develop-PR-port-16010
 - Merged commits:
   1. 270640f
   2. 3ec7e6d

Author: magento-engcom-team

app/code/Magento/Backend/Block/Widget/Form/Element/Dependence.php

@@ -120,14 +120,18 @@ protected function _toHtml()
         if (!$this->_depends) {
             return '';
         }
-        return '<script>
-            require(["mage/adminhtml/form"], function(){
-        new FormElementDependenceController(' .
-            $this->_getDependsJson() .
-            ($this->_configOptions ? ', ' .
-            $this->_jsonEncoder->encode(
-                $this->_configOptions
-            ) : '') . '); });</script>';
+
+        $params = $this->_getDependsJson();
+
+        if ($this->_configOptions) {
+            $params .= ', ' .  $this->_jsonEncoder->encode($this->_configOptions);
+        }
+
+        return "<script>
+require(['mage/adminhtml/form'], function(){
+    new FormElementDependenceController({$params});
+});
+</script>";
     }
 
     /**