---
title: "Breaking: #73044 - JSON for ClickMenu in Backend"
manual: "TYPO3 Core Changelog"
version: "main"
permalink: "https://docs.typo3.org/permalink/changelog:breaking-73044"
source: "Changelog/8.0/Breaking-73044-JSONForClickMenuInBackend.rst"
typo3-version: "8.0"
typo3-major: 8
type: "breaking"
issue: 73044
forge: "https://forge.typo3.org/issues/73044"
tags: ["JavaScript", "Backend"]
rendered: "2026-09-19T12:12:50+00:00"
---

# Breaking: #73044 - JSON for ClickMenu in Backend {#breaking-73044}

See [forge#73044](https://forge.typo3.org/issues/73044)

## Description {#description}

The ClickMenu in the TYPO3 Backend now uses JSON to transport data between the server and the client.

Before, a proprietary \<t3ajax> syntax with XML was used to transport the contents of the ClickMenu.

## Impact {#impact}

Using ClickMenu to implement a custom ClickMenu JavaScript handler instead of the default ClickMenu.js could result in
unexpected behaviour.

## Affected Installations {#affected-installations}

Installations with extensions that use custom ClickMenu.js behaviour.

## Migration {#migration}

Adapt the custom code to handle JSON responses instead of XML responses.