The difference between this and _this in vue

this and _this point to the same current Vue instance in Vue. This helps ensure that the instance is accessed correctly in all situations, especially when using arrow functions. This is generally recommended, but _this can be used when you need to explicitly represent the current instance or integrate with a third-party library.

The difference between this and _this in Vue

Quick answer:

this and _this are the same in Vue, both point to the current Vue instance.

Detailed explanation:

In Vue, this points to the current Vue instance, which contains all data and methods related to this instance. _this is an alias of this and there is essentially no difference.

Cause:

In earlier versions of Vue, this would be bound to the wrong context when using arrow functions. To solve this problem, Vue added _this as an alias of this to ensure that the current instance is correctly accessed in all cases.

When to use this and When to use _this`?

Since this and _this are the same, they can be used interchangeably. In general, it is more common to use this because it is easier to understand. However, using _this may be more useful in the following situations:

• When you want to make it clear that you are using this to point to the current instance.
• When you use a third-party library, the library may require an explicit _this reference.

Note:

• In Vue 3.2 version, _this has been deprecated and replaced with this.
• In a template, this and _this are not accessible because templates are compiled at runtime.

The above is the detailed content of The difference between this and _this in vue. For more information, please follow other related articles on the PHP Chinese website!