How Much Do You Know About 29 JavaScript Object Methods?

In JavaScript, the object type is one of the most important types and is often used for data processing in projects. Although we frequently use this type, its methods are not commonly used or are seldom used. Unnoticeably, the number of methods for JavaScript objects has reached 29. Today, let’s take a look at the use of these 29 methods.

Additionally, when using typeof on an Array, you’ll find that an array is a type of object, or you might say that an array is a special type of object. Therefore, most methods that apply to objects can also be used on arrays, and some effects might surprise you.

Object.defineProperty intercepts object properties

Anyone familiar with Vue should be quite acquainted with this method, as in Vue2, the underlying reactive interception is implemented using Object.defineProperty combined with the observer pattern. It’s worth mentioning this because the description object will be used in some methods later on.

The Object.defineProperty method accepts three parameters: the first is the target object, the second is the property to be added or modified, and the third is the description object. It returns the object passed in.