diff --git a/DesktopEditor/doctrenderer/json/json.cpp b/DesktopEditor/doctrenderer/json/json.cpp
index 0f38193fca..32d5c07071 100644
--- a/DesktopEditor/doctrenderer/json/json.cpp
+++ b/DesktopEditor/doctrenderer/json/json.cpp
@@ -2,6 +2,9 @@
 #include "json_p.h"
 #include "json_values.h"
 
+// for working with typed arrays: Alloc() and Free()
+#include "js_base.h"
+
 namespace NSJSON
 {
 	CTypedValue::CTypedValue() : m_type(vtUndefined)
@@ -174,9 +177,12 @@ namespace NSJSON
 
 	int IValue::GetCount() const
 	{
-		if (m_internal->m_type != CTypedValue::vtArray)
+		if (m_internal->m_type == CTypedValue::vtArray)
+			return static_cast<CArray*>(m_internal->m_value.get())->getCount();
+		else if (m_internal->m_type == CTypedValue::vtTypedArray)
+			return static_cast<CTypedArray*>(m_internal->m_value.get())->getCount();
+		else
 			return 0;
-		return static_cast<CArray*>(m_internal->m_value.get())->getCount();
 	}
 
 	const CValueRef IValue::Get(int index) const
@@ -319,19 +325,20 @@ namespace NSJSON
 
 	CValue CValue::CreateTypedArray(BYTE* data, int count, bool isExternalize)
 	{
-		// TODO:
-		return CValue();
+		CValue ret;
+		ret.m_internal->m_value = std::make_shared<CTypedArray>(data, count, isExternalize);
+		ret.m_internal->m_type = CTypedValue::vtTypedArray;
+		return ret;
 	}
 
 	BYTE* CValue::AllocTypedArray(size_t size)
 	{
-		// TODO:
-		return nullptr;
+		return NSJSBase::NSAllocator::Alloc(size);
 	}
 
 	void CValue::FreeTypedArray(BYTE* data, size_t size)
 	{
-		// TODO:
+		NSJSBase::NSAllocator::Free(data, size);
 	}
 
 	CValue CValue::CreateObject()
diff --git a/DesktopEditor/doctrenderer/json/json_values.cpp b/DesktopEditor/doctrenderer/json/json_values.cpp
index acb92da57c..eaab4b5963 100644
--- a/DesktopEditor/doctrenderer/json/json_values.cpp
+++ b/DesktopEditor/doctrenderer/json/json_values.cpp
@@ -224,13 +224,16 @@ namespace NSJSON
 		return m_values[index];
 	}
 
-	CTypedArray::CTypedArray(BYTE* data, int len) : m_data(data), m_len(len)
+	CTypedArray::CTypedArray(BYTE* data, int len, bool isExternalize) : m_data(data), m_len(len), m_isExternalize(isExternalize)
 	{
 	}
 
 	CTypedArray::~CTypedArray()
 	{
-		// TODO:
+		if (!m_isExternalize)
+		{
+			CValue::FreeTypedArray(m_data, m_len);
+		}
 	}
 
 	BYTE* CTypedArray::getData()
diff --git a/DesktopEditor/doctrenderer/json/json_values.h b/DesktopEditor/doctrenderer/json/json_values.h
index d9d5a58ba8..d7d378d875 100644
--- a/DesktopEditor/doctrenderer/json/json_values.h
+++ b/DesktopEditor/doctrenderer/json/json_values.h
@@ -96,7 +96,7 @@ namespace NSJSON
 	class CTypedArray : public IBaseValue
 	{
 	public:
-		CTypedArray(BYTE* data = nullptr, int len = 0);
+		CTypedArray(BYTE* data, int len, bool isExternalize = true);
 		~CTypedArray();
 
 	public:
@@ -106,6 +106,7 @@ namespace NSJSON
 	private:
 		BYTE* m_data;
 		int m_len;
+		bool m_isExternalize;
 	};
 
 	class CObject : public IBaseValue
diff --git a/DesktopEditor/doctrenderer/json/serialization.h b/DesktopEditor/doctrenderer/json/serialization.h
index 27f0d133f3..c17722d080 100644
--- a/DesktopEditor/doctrenderer/json/serialization.h
+++ b/DesktopEditor/doctrenderer/json/serialization.h
@@ -2,7 +2,7 @@
 #define SERIALIZATION_H_
 
 #include "json.h"
-#include "json_values.h"
+//#include "json_values.h"
 #include "../js_internal/js_base.h"
 
 #include <cmath>
@@ -40,12 +40,8 @@ namespace NSJSON
 		}
 		else if (value.IsTypedArray())
 		{
-			// TODO:
-			/*
-			JSSmart<NSJSBase::CJSTypedArray> jsTypedArr = NSJSBase::CJSContext::createUint8Array(value.GetData(), value.GetCount());
+			JSSmart<NSJSBase::CJSTypedArray> jsTypedArr = NSJSBase::CJSContext::createUint8Array(const_cast<BYTE*>(value.GetData()), value.GetCount());
 			ret = jsTypedArr->toValue();
-			*/
-			ret = NSJSBase::CJSContext::createUndefined();
 		}
 		else
 		{
diff --git a/DesktopEditor/doctrenderer/test/json/main.cpp b/DesktopEditor/doctrenderer/test/json/main.cpp
index 0073b53a9a..30124e2d8d 100644
--- a/DesktopEditor/doctrenderer/test/json/main.cpp
+++ b/DesktopEditor/doctrenderer/test/json/main.cpp
@@ -80,15 +80,14 @@ int main()
 	numbers[3] = innerArray;
 	textPr["numbers"] = numbers;
 	// create typed array
-	/*
-	BYTE* pData = new BYTE[4];
+	BYTE* pData = CValue::AllocTypedArray(4);
 	pData[0] = 11;
 	pData[1] = 23;
 	pData[2] = 58;
 	pData[3] = 13;
 	// add typed array
-	...
-	*/
+	CValue typedArr = CValue::CreateTypedArray(pData, 4, false);
+	textPr["typedArr"] = typedArr;
 
 	// convert to JS
 	JSSmart<CJSObject> jsObj = toJS(textPr)->toObject();