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Garden Rain Chain | Perigold babel plugin for github.com/facebookincubator/idx does the same. If the reference is either of these nullish values, the checks will stop and return undefined. Feel free to share and react if you liked this article. So, if there are any further function calls or operations to the right of ?., they wont be made. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? Optional chaining '?.' Tipe simbol Menolak konversi primitif Tipe data Metode primitif Angka String *Array* Metode *array* Iterables / Bisa di iterasi Map dan Set WeakMap dan WeakSet Objek.kunci, nilai, entri Destrukturisasi Penugasan Tanggal dan waktu Metode JSON, toJSON Penggunaan lanjutan fungsi Rekursi dan tumpukan (Recursion and stack) According to Caniuse, it's only supported in ~78% of browsers at the writing of this solution. rev2023.3.3.43278. || checks if the left hand side operator is falsy. I should be happy that optional chaining has reached stage 3. As you point out, the compression made by Gzip can compensate for the use of this plugin. ? Optional chaining lives up to its name. I know this test case is far from perfect, and if you notice any mistakes I made, be sure to let me know so we can keep this accurate. operator? How to Check If A Key Exists In An Object In JavaScript to provide fallback values. https://codesandbox.io/s/dreamy-burnell-vtgul?file=/pages/index.vue, Maybe you have some messed up deps e.g. If the object accessed or function called using this operator is undefined or null, the expression short circuits and evaluates to undefined instead of throwing an error. Fullstack React, Typescript, MongoDB developer | maker of rake.red, updrafts.app, testing-playground.com, issupported.com, leaflet-geosearch. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.