More information on RegExp match indices. If we add the flag /d to a regular expression, using it produces match objects that record the start and end index of each group capture (lines A and B): const matchObj = /(a+)(b+)/d. All Typed Array classes: Uint8Array etc.The following “indexable” types have method. at() of indexable values lets us read an element at a given index (like the bracket operator ) and supports negative indices (unlike the bracket operator): >. The cause of an error err shows up in the stack trace and can be accessed via err.cause. New Features in ES2019 imStart () imEnd () omEntries Optional catch binding Array.flat () Array.flatMap () Revised Array.Sort () Revised JSON.stringify () Separator symbols allowed in string litterals Revised Function.toString () Warning These features are relatively new. What’s new in ECMAScript 2022? # New members of classes # class M圜lass ) Where can I look up which features were added in a given ECMAScript version?.How are features added to ECMAScript? They go through the stages of the TC39 process.Who designs ECMAScript? TC39 – Ecma Technical Committee 39.What is the difference between JavaScript and ECMAScript?.Private slot checks via the in operator.On 22 June 2022, the 123nd Ecma General Assembly approved the ECMAScript 2022 language specification, which means that it’s officially a standard now.
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