Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Remove debatable statement on perf in jsx-no-bind #2067

Merged
merged 1 commit into from Dec 2, 2018
Merged

Remove debatable statement on perf in jsx-no-bind #2067

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Jump to
Jump to file
Failed to load files.
Diff view
Diff view
2 changes: 1 addition & 1 deletion docs/rules/jsx-no-bind.md
View file
Open in desktop
@@ -1,6 +1,6 @@
# No `.bind()` or Arrow Functions in JSX Props (react/jsx-no-bind)

A `bind` call or [arrow function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions) in a JSX prop will create a brand new function on every single render. This is bad for performance, as it will result in the garbage collector being invoked way more than is necessary. It may also cause unnecessary re-renders if a brand new function is passed as a prop to a component that uses reference equality check on the prop to determine if it should update.
Copy link
Member

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

There’s a minor performance issue that applies only to functions, which is that the same function object isn’t optimized until it’s been called multiple times - so if you create a new one on every render, you’re resetting the progress on optimizing that function.

A `bind` call or [arrow function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/Arrow_functions) in a JSX prop will create a brand new function on every single render. This is bad for performance, as it may cause unnecessary re-renders if a brand new function is passed as a prop to a component that uses reference equality check on the prop to determine if it should update.

## Rule Details

Expand Down