In statically typed programming languages a Dictionary (Key/Value pair collection) object can be very useful at times. In the following example, the property, instead of declaring in the object itself, is declared outside the object, making it a two-step process. The TrySetMember method is called. Keys must be strings, and values must be a valid JSON data type (string, number, object, array, boolean or null). For example, users of a website, payments in a bank account, or recipes in a cookbook could all be JavaScript objects. The destucturing defines a new variable heroName (instead of name as in previous example), and assigns to heroName the value hero.name. How to access a derived class member variable by an interface object in Java? Otherwise, just use any of the latest methods: Object.keys(), Object.values() or Object.entries(). There are different ways to create new objects: Define and create a single object, using an object literal. In order to add Key/value pair to a JSON object, Either we use dot notation or square bracket notation. A dynamic entity stores an exact representation of each object property or array element in the JSON string. For example:
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