Objects and JSON

JSON is the literal of objects in JavaScript and is the representation of objects, and by using JSON, you can reduce intermediate variables, making the structure of your code clearer and more intuitive. Using JSON, you can build objects dynamically by adding or removing properties to objects to improve the functionality of objects without having to instantiate them through classes, which greatly improves the efficiency of coding. The JavaScript object itself is a dictionary (dictionary), or a map in the Java language, or an associative array, that is, by associating an object with a key, which can itself be an object, according to this definition, We can know that JavaScript objects can represent arbitrarily complex data structures.