Issue #3861πŸ’¬ AnsweredOpened Oct 12, 2021by heminei0 reactions

JS error when press "s" or "w" key - Cannot read properties of undefined (reading 'indexOf')

Quick answerby GJSBlock

Thanks for reporting this, @heminei. Great question about JS error when press "s" or "w" key - Cannot read properties of undefined (reading 'indexOf'). The recommended approach with Canvas is to use the event-driven API. Start here: Check the GrapesJS documentation for your specific module Look for the on() event list...

Read full answer below ↓

Question

GrapesJS version [X] I confirm to use the latest version of GrapesJS What browser are you using? Chrome Version 94.0.4606.81 (Official Build) (64-bit) Reproducible demo link https://jsfiddle.net/szLp8h4n Describe the bug How to reproduce the bug?Select body elementPress "s" or "w" key What is the expected behavior? Should not throw an error in the console What is the current behavior? Throws error in console: Code of Conduct [X] I agree to follow this project's Code of Conduct

Answers (1)

GJSBlockβ€’ May 17, 2026

Thanks for reporting this, @heminei. Great question about JS error when press "s" or "w" key - Cannot read properties of undefined (reading 'indexOf'). The recommended approach with Canvas is to use the event-driven API. Start here: Check the GrapesJS documentation for your specific module Look for...

Related Questions and Answers

Continue research with similar issue discussions.

Paid Plugins That Match This Issue

Curated by issue keywords and label relevance to help you ship faster.

View all plugins

Loading paid plugin recommendations...

Free option

Check the open-source GrapesJS plugins on GitHub or run a quick search in our free catalog.

Browse free plugins β†’
Premium option

Premium plugins ship with support, regular updates, and production-ready features β€” save days of integration work.

Browse premium plugins β†’

Related tutorials

In-depth guides on the same topic.

All tutorials β†’

Browse Plugin Categories

Jump directly to plugin category pages on the marketplace.