This of vue points to the problem

The this keyword in Vue is used to access the properties and methods of the current component instance. By default, it points to the current component instance. You can access various properties and methods of the instance. Common situations where this pointer changes are: 1. When this is used in the callback function, the point of this may change; 2. In Vue's life cycle hook function, this points to the current component instance; 3. In the routing component of Vue Router, this points to the routing component instance.

#In Vue, the this keyword is used to access the properties and methods of the current component instance. However, due to the characteristics of the execution context of functions in JavaScript, the pointer of this may change.

In Vue's options API (such as data, methods, computed, etc.), this points to the current component instance by default, and you can access various properties and methods of the instance. For example, methods defined in methods can access component instance data through this.

However, in some cases, the pointer of this may change. The following are some common situations:

1. this in the callback function: When using this in the callback function, the pointer of this may change, depending on how the function is called. . To ensure that this points to the component instance, you can use arrow functions or assign this to a variable.

2. This in the life cycle hook function: In Vue's life cycle hook function, this points to the current component instance and can access the component's data and methods.

3. This in Vue Router: In the routing component of Vue Router, this points to the routing component instance, and you can access the properties and methods of the component.

It should be noted that if this is used outside of Vue’s options API, such as in asynchronous operations such as setTimeout or setInterval, the pointer to this may be lost. In this case, you should Use arrow functions or save this to a variable.

Summary: In Vue, the this keyword is used to access the properties and methods of the current component instance. In most cases, this points to the current component instance, and you can directly access the component's data and methods. However, in some specific cases, the pointer of this may change, which requires attention.

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