Optional catch binding | Frontend Practical Guide

Overview

Omit the the binding parameter of a catch clause when you don't need information about the exception in a try ... catch statement.

Feature	Desktop				Mobile
Feature	Chrome	Edge	Firefox	Safari	Chrome Android	Safari iOS
`javascript.statements.try_catch.optional_catch_binding`	66	79	58	11.1	66	11.3

1+Supported (version) Not supported ※Has note Sub-feature descriptions sourced from MDN Web Docs (CC BY-SA 2.5)

JAVASCRIPT

// Traditional
try { JSON.parse(input); } catch (e) { return false; }

// Optional
try { JSON.parse(input); } catch { return false; }

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Convert to failure also errorcontents to that case, catch shinpl to write..

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Using Optional catch binding
Omit the the binding parameter of a catch clause when you don't need information about the exception in a try ... catch statement.