The optional chaining operator ( ?. ) allows you to access the value of a property located deep within a chain of objects without explicitly checking if each ... ... <看更多>

…以此類推。 目前Optional chaining 除了IE 以外的瀏覽器都支援，也支援Node.js v14.0.0 版本以上，詳細可以 ... ... <看更多>

You are doing it in correct way, Just a suggestion - You can use Nullish coalescing operator (??) along with Optional chaining (?.) ... ... <看更多>

Optional chaining is a feature in JavaScript that allows you to access the properties of an object or elements of an array without having to ... ... <看更多>

create a JS file; try to access an object with the optional chining ( ?.) and save the file; it automatically formats the line with space as ... ... <看更多>

If the part you don't like it the repetition of calling customFieldsServer.getAccountCustomFields(...) in two separate places, ... ... <看更多>