The meaning of obj in the reactive() function in vue

The obj parameter in the reactive() function in Vue represents the original object to be converted into a reactive proxy object. This function makes an object reactive by hijacking its properties and notifying Vue of changes, ensuring that the proxy object behaves the same as the original object, and creating a proxy object that can be observed by Vue. Usage scenarios include making data objects reactive, nesting within other reactive objects, and converting third-party library objects to reactive.

The obj parameter in the reactive() function in Vue

In Vue.js, the reactive() function is a reactive function that converts a given object into a reactive proxy object. The parameter obj of the function represents the original object to be converted to responsive.

Function

##reactive() The function converts the object into a reactive proxy object in the following way:

Hijack properties in the object and notify Vue when the property value changes.
• Ensures that the proxy object behaves the same as the original object, allowing the use of Vue's reactive features (e.g., data binding).
• Create a proxy object whose properties can be observed and responded to by Vue.

Usage scenarios

Usually use the

reactive() function in the following situations:

Use Data objects are made reactive so that data binding can be used.
• Nested within other reactive objects to create more complex data structures.
• Convert to a responsive third-party library object.

Example

<code class="js">const user = reactive({
  firstName: 'John',
  lastName: 'Doe',
});

// 更改 firstName 属性会触发 Vue 的响应性机制
user.firstName = 'Jane';</code>

In this case, the

user object is converted into a reactive proxy object. When the firstName property is changed, Vue will detect this change and trigger an appropriate update.

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