---
title: "Uncaught ReferenceError: ko is not defined"  
description: "Uncaught ReferenceError: ko is not defined"  
author: "Prakash nidhi Verma"  
published: 2018-07-18  
updated: 2018-07-18  
canonical: https://www.mindstick.com/forum/34622/uncaught-referenceerror-ko-is-not-defined  
category: "web development"  
tags: ["web development", "knockout.js"]  
reading_time: 1 minute  

---

# Uncaught ReferenceError: ko is not defined

How to [handle error](https://www.mindstick.com/forum/159014/how-does-rust-handle-error-handling-and-what-are-the-advantages-of-its-approach) in [knockout.js](https://www.mindstick.com/forum/160797/conditional-html-heading-tag-based-on-variable-in-knockout-js) when error occur like this :

Uncaught ReferenceError: ko is not defined


---

Original Source: https://www.mindstick.com/forum/34622/uncaught-referenceerror-ko-is-not-defined

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