diff --git a/fxjs/xfa/cjx_container.cpp b/fxjs/xfa/cjx_container.cpp
index 0e58a7e..a04fccf 100644
--- a/fxjs/xfa/cjx_container.cpp
+++ b/fxjs/xfa/cjx_container.cpp
@@ -19,7 +19,7 @@
     {"getDeltas", getDeltas_static}};
 
 CJX_Container::CJX_Container(CXFA_Node* node) : CJX_Node(node) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Container::~CJX_Container() {}
diff --git a/fxjs/xfa/cjx_datawindow.cpp b/fxjs/xfa/cjx_datawindow.cpp
index 1f5b6ec..01a35f0 100644
--- a/fxjs/xfa/cjx_datawindow.cpp
+++ b/fxjs/xfa/cjx_datawindow.cpp
@@ -19,7 +19,7 @@
 
 CJX_DataWindow::CJX_DataWindow(CScript_DataWindow* window)
     : CJX_Object(window) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_DataWindow::~CJX_DataWindow() {}
diff --git a/fxjs/xfa/cjx_delta.cpp b/fxjs/xfa/cjx_delta.cpp
index 9732f4e..c87ff35 100644
--- a/fxjs/xfa/cjx_delta.cpp
+++ b/fxjs/xfa/cjx_delta.cpp
@@ -15,7 +15,7 @@
 const CJX_MethodSpec CJX_Delta::MethodSpecs[] = {{"restore", restore_static}};
 
 CJX_Delta::CJX_Delta(CXFA_Delta* delta) : CJX_Object(delta) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Delta::~CJX_Delta() {}
diff --git a/fxjs/xfa/cjx_desc.cpp b/fxjs/xfa/cjx_desc.cpp
index ae125c2..aa8ee29 100644
--- a/fxjs/xfa/cjx_desc.cpp
+++ b/fxjs/xfa/cjx_desc.cpp
@@ -15,7 +15,7 @@
 const CJX_MethodSpec CJX_Desc::MethodSpecs[] = {{"metadata", metadata_static}};
 
 CJX_Desc::CJX_Desc(CXFA_Desc* desc) : CJX_Node(desc) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Desc::~CJX_Desc() {}
diff --git a/fxjs/xfa/cjx_eventpseudomodel.cpp b/fxjs/xfa/cjx_eventpseudomodel.cpp
index a6c5560..2211905 100644
--- a/fxjs/xfa/cjx_eventpseudomodel.cpp
+++ b/fxjs/xfa/cjx_eventpseudomodel.cpp
@@ -51,7 +51,7 @@
 
 CJX_EventPseudoModel::CJX_EventPseudoModel(CScript_EventPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_EventPseudoModel::~CJX_EventPseudoModel() {}
diff --git a/fxjs/xfa/cjx_exclgroup.cpp b/fxjs/xfa/cjx_exclgroup.cpp
index 6e44e56..0de0ef0 100644
--- a/fxjs/xfa/cjx_exclgroup.cpp
+++ b/fxjs/xfa/cjx_exclgroup.cpp
@@ -25,7 +25,7 @@
     {"selectedMember", selectedMember_static}};
 
 CJX_ExclGroup::CJX_ExclGroup(CXFA_ExclGroup* group) : CJX_Node(group) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_ExclGroup::~CJX_ExclGroup() {}
diff --git a/fxjs/xfa/cjx_field.cpp b/fxjs/xfa/cjx_field.cpp
index 3beb868..d05e017 100644
--- a/fxjs/xfa/cjx_field.cpp
+++ b/fxjs/xfa/cjx_field.cpp
@@ -33,7 +33,7 @@
     {"setItemState", setItemState_static}};
 
 CJX_Field::CJX_Field(CXFA_Field* field) : CJX_Container(field) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Field::~CJX_Field() {}
diff --git a/fxjs/xfa/cjx_form.cpp b/fxjs/xfa/cjx_form.cpp
index d1d50ad..e1441b0 100644
--- a/fxjs/xfa/cjx_form.cpp
+++ b/fxjs/xfa/cjx_form.cpp
@@ -26,7 +26,7 @@
     {"remerge", remerge_static}};
 
 CJX_Form::CJX_Form(CXFA_Form* form) : CJX_Model(form) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Form::~CJX_Form() {}
diff --git a/fxjs/xfa/cjx_hostpseudomodel.cpp b/fxjs/xfa/cjx_hostpseudomodel.cpp
index 2d9b1bf..6dd1606 100644
--- a/fxjs/xfa/cjx_hostpseudomodel.cpp
+++ b/fxjs/xfa/cjx_hostpseudomodel.cpp
@@ -68,7 +68,7 @@
 
 CJX_HostPseudoModel::CJX_HostPseudoModel(CScript_HostPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_HostPseudoModel::~CJX_HostPseudoModel() {}
diff --git a/fxjs/xfa/cjx_instancemanager.cpp b/fxjs/xfa/cjx_instancemanager.cpp
index f8df62c..d9471cd 100644
--- a/fxjs/xfa/cjx_instancemanager.cpp
+++ b/fxjs/xfa/cjx_instancemanager.cpp
@@ -27,7 +27,7 @@
 
 CJX_InstanceManager::CJX_InstanceManager(CXFA_InstanceManager* mgr)
     : CJX_Node(mgr) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_InstanceManager::~CJX_InstanceManager() {}
diff --git a/fxjs/xfa/cjx_layoutpseudomodel.cpp b/fxjs/xfa/cjx_layoutpseudomodel.cpp
index 0ae4871..a5dcf98 100644
--- a/fxjs/xfa/cjx_layoutpseudomodel.cpp
+++ b/fxjs/xfa/cjx_layoutpseudomodel.cpp
@@ -48,7 +48,7 @@
 
 CJX_LayoutPseudoModel::CJX_LayoutPseudoModel(CScript_LayoutPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_LayoutPseudoModel::~CJX_LayoutPseudoModel() {}
diff --git a/fxjs/xfa/cjx_list.cpp b/fxjs/xfa/cjx_list.cpp
index b6ac47e..fcac45f 100644
--- a/fxjs/xfa/cjx_list.cpp
+++ b/fxjs/xfa/cjx_list.cpp
@@ -22,7 +22,7 @@
                                                 {"remove", remove_static}};
 
 CJX_List::CJX_List(CXFA_List* list) : CJX_Object(list) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_List::~CJX_List() {}
diff --git a/fxjs/xfa/cjx_logpseudomodel.cpp b/fxjs/xfa/cjx_logpseudomodel.cpp
index 93772ed..9072fef 100644
--- a/fxjs/xfa/cjx_logpseudomodel.cpp
+++ b/fxjs/xfa/cjx_logpseudomodel.cpp
@@ -20,7 +20,7 @@
 
 CJX_LogPseudoModel::CJX_LogPseudoModel(CScript_LogPseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_LogPseudoModel::~CJX_LogPseudoModel() {}
diff --git a/fxjs/xfa/cjx_manifest.cpp b/fxjs/xfa/cjx_manifest.cpp
index 642f4ca..a8d1fd5 100644
--- a/fxjs/xfa/cjx_manifest.cpp
+++ b/fxjs/xfa/cjx_manifest.cpp
@@ -16,7 +16,7 @@
     {"evaluate", evaluate_static}};
 
 CJX_Manifest::CJX_Manifest(CXFA_Manifest* manifest) : CJX_Node(manifest) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Manifest::~CJX_Manifest() {}
diff --git a/fxjs/xfa/cjx_model.cpp b/fxjs/xfa/cjx_model.cpp
index 688b303..d94a1b6 100644
--- a/fxjs/xfa/cjx_model.cpp
+++ b/fxjs/xfa/cjx_model.cpp
@@ -20,7 +20,7 @@
     {"isCompatibleNS", isCompatibleNS_static}};
 
 CJX_Model::CJX_Model(CXFA_Node* node) : CJX_Node(node) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Model::~CJX_Model() {}
diff --git a/fxjs/xfa/cjx_node.cpp b/fxjs/xfa/cjx_node.cpp
index 7c472db..856fea5 100644
--- a/fxjs/xfa/cjx_node.cpp
+++ b/fxjs/xfa/cjx_node.cpp
@@ -98,7 +98,7 @@
     {"setElement", setElement_static}};
 
 CJX_Node::CJX_Node(CXFA_Node* node) : CJX_Tree(node) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Node::~CJX_Node() = default;
diff --git a/fxjs/xfa/cjx_object.cpp b/fxjs/xfa/cjx_object.cpp
index d357c56..a6b1d12 100644
--- a/fxjs/xfa/cjx_object.cpp
+++ b/fxjs/xfa/cjx_object.cpp
@@ -129,10 +129,9 @@
   ClearMapModuleBuffer();
 }
 
-void CJX_Object::DefineMethods(const CJX_MethodSpec method_specs[],
-                               size_t count) {
-  for (size_t i = 0; i < count; ++i)
-    method_specs_[method_specs[i].pName] = method_specs[i].pMethodCall;
+void CJX_Object::DefineMethods(pdfium::span<const CJX_MethodSpec> methods) {
+  for (const auto& item : methods)
+    method_specs_[item.pName] = item.pMethodCall;
 }
 
 CXFA_Document* CJX_Object::GetDocument() const {
diff --git a/fxjs/xfa/cjx_object.h b/fxjs/xfa/cjx_object.h
index ac17a04..1c5e405 100644
--- a/fxjs/xfa/cjx_object.h
+++ b/fxjs/xfa/cjx_object.h
@@ -17,6 +17,7 @@
 #include "core/fxcrt/xml/cfx_xmlelement.h"
 #include "fxjs/cjx_define.h"
 #include "third_party/base/optional.h"
+#include "third_party/base/span.h"
 #include "xfa/fxfa/fxfa_basic.h"
 
 class CFXJSE_Value;
@@ -218,8 +219,7 @@
   void ThrowTooManyOccurancesException(const WideString& obj) const;
 
  protected:
-  void DefineMethods(const CJX_MethodSpec method_specs[], size_t count);
-
+  void DefineMethods(pdfium::span<const CJX_MethodSpec> methods);
   void MoveBufferMapData(CXFA_Object* pSrcModule, CXFA_Object* pDstModule);
   void SetMapModuleString(void* pKey, const WideStringView& wsValue);
   void ThrowException(const wchar_t* str, ...) const;
diff --git a/fxjs/xfa/cjx_packet.cpp b/fxjs/xfa/cjx_packet.cpp
index c3d8dbb..e4119ba 100644
--- a/fxjs/xfa/cjx_packet.cpp
+++ b/fxjs/xfa/cjx_packet.cpp
@@ -23,7 +23,7 @@
     {"setAttribute", setAttribute_static}};
 
 CJX_Packet::CJX_Packet(CXFA_Packet* packet) : CJX_Node(packet) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Packet::~CJX_Packet() {}
diff --git a/fxjs/xfa/cjx_signaturepseudomodel.cpp b/fxjs/xfa/cjx_signaturepseudomodel.cpp
index 0e4d560..20cb5dc 100644
--- a/fxjs/xfa/cjx_signaturepseudomodel.cpp
+++ b/fxjs/xfa/cjx_signaturepseudomodel.cpp
@@ -21,7 +21,7 @@
 CJX_SignaturePseudoModel::CJX_SignaturePseudoModel(
     CScript_SignaturePseudoModel* model)
     : CJX_Object(model) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_SignaturePseudoModel::~CJX_SignaturePseudoModel() {}
diff --git a/fxjs/xfa/cjx_source.cpp b/fxjs/xfa/cjx_source.cpp
index 98772b5..933229e 100644
--- a/fxjs/xfa/cjx_source.cpp
+++ b/fxjs/xfa/cjx_source.cpp
@@ -32,7 +32,7 @@
     {"updateBatch", updateBatch_static}};
 
 CJX_Source::CJX_Source(CXFA_Source* src) : CJX_Node(src) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Source::~CJX_Source() {}
diff --git a/fxjs/xfa/cjx_subform.cpp b/fxjs/xfa/cjx_subform.cpp
index 042bd85..9f4736a 100644
--- a/fxjs/xfa/cjx_subform.cpp
+++ b/fxjs/xfa/cjx_subform.cpp
@@ -23,7 +23,7 @@
     {"execValidate", execValidate_static}};
 
 CJX_Subform::CJX_Subform(CXFA_Node* node) : CJX_Container(node) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Subform::~CJX_Subform() {}
diff --git a/fxjs/xfa/cjx_template.cpp b/fxjs/xfa/cjx_template.cpp
index 0b9c3b2..8690083 100644
--- a/fxjs/xfa/cjx_template.cpp
+++ b/fxjs/xfa/cjx_template.cpp
@@ -22,7 +22,7 @@
     {"remerge", remerge_static}};
 
 CJX_Template::CJX_Template(CXFA_Template* tmpl) : CJX_Model(tmpl) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Template::~CJX_Template() {}
diff --git a/fxjs/xfa/cjx_tree.cpp b/fxjs/xfa/cjx_tree.cpp
index 442a82d..8971ef9 100644
--- a/fxjs/xfa/cjx_tree.cpp
+++ b/fxjs/xfa/cjx_tree.cpp
@@ -24,7 +24,7 @@
     {"resolveNodes", resolveNodes_static}};
 
 CJX_Tree::CJX_Tree(CXFA_Object* obj) : CJX_Object(obj) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_Tree::~CJX_Tree() {}
diff --git a/fxjs/xfa/cjx_treelist.cpp b/fxjs/xfa/cjx_treelist.cpp
index b608734..b79b9e1 100644
--- a/fxjs/xfa/cjx_treelist.cpp
+++ b/fxjs/xfa/cjx_treelist.cpp
@@ -19,7 +19,7 @@
     {"namedItem", namedItem_static}};
 
 CJX_TreeList::CJX_TreeList(CXFA_TreeList* list) : CJX_List(list) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_TreeList::~CJX_TreeList() {}
diff --git a/fxjs/xfa/cjx_wsdlconnection.cpp b/fxjs/xfa/cjx_wsdlconnection.cpp
index 1f9ae59..523ea2d 100644
--- a/fxjs/xfa/cjx_wsdlconnection.cpp
+++ b/fxjs/xfa/cjx_wsdlconnection.cpp
@@ -17,7 +17,7 @@
 
 CJX_WsdlConnection::CJX_WsdlConnection(CXFA_WsdlConnection* connection)
     : CJX_Node(connection) {
-  DefineMethods(MethodSpecs, FX_ArraySize(MethodSpecs));
+  DefineMethods(MethodSpecs);
 }
 
 CJX_WsdlConnection::~CJX_WsdlConnection() {}