That's not a valid javascript function to be used for the callback. You can see samples here https://www.w3schools.com/tags/ev_oncontextmenu.asp

@lramos15 https://stackoverflow.com/a/16987533/11027903

I know it isn't a valid function. But It indeed works to forbidden event handler.

@tjx666 Ah yes this is a weird edge case of the spec https://www.w3.org/TR/2017/REC-html52-20171214/webappapis.html#the-event-handler-processing-algorithm.

Functions which return false don't work but just the string literal return false; seems to.

Yeah I just noticed all of javascript now is erroring out in VS Code cause of the return.
Any temporary fixes to just have it ignore return on problems?

I just turned off the HTML setting to validate embedded scripts.

For those that don't want to wait for a fix, the setting to turn this off is html.validate.scripts.

I couldn't stand the errors in all my HTML files, and the 100+ in the project.
At least for me, actual embedded scripts are nearly non-existent in my project, aside from the element event handlers.

I just turned off the HTML setting to validate embedded scripts.

For those that don't want to wait for a fix, the setting to turn this off is html.validate.scripts.

I couldn't stand the errors in all my HTML files, and the 100+ in the project. At least for me, actual embedded scripts are nearly non-existent in my project, aside from the element event handlers.

I'm having the same problem right now. Sorry, I am a newb to coding. How do I turn this off? You said 'html.validate.scripts'. I'm using VS code, and don't know where to find that. Thanks!

Verified in latest insider:

Open settings by shortcut cmd + ,, and search that setting @RyanHeid .

Uncheck here:

But the stable version next week will fix this.

I found it, and it solved my issue. Thank you so much! @tjx666

I am working in javascript exclusively and this is still an issue.
html.validate.scripts on or off does nothing. It still shows it's an error.

@crymic Please file a new issue with

• the vs code version you are using
• a small code sample
• information which language the editor is in (status bar, lower right)

I am working in javascript exclusively and this is still an issue. html.validate.scripts on or off does nothing. It still shows it's an error.

The specific setting I mentioned is only for HTML pages. If you are editing .js files, then it won't work. There's a separate setting for that, but it will disable all javascript validation, and probably not what you want.
Wait for the official fix when it comes out.