Vue3 objects as
时间: 2024-01-10 11:04:24 浏览: 32
reactive proxies
Vue3 introduces a new way of creating reactive objects called reactive proxies. A reactive proxy is essentially a JavaScript object that is wrapped in a reactive layer. This allows the object to be observed for changes, and any changes made to the object will trigger updates to any components that are using it.
To create a reactive proxy, you can use the `reactive` function from the `vue` package:
```javascript
import { reactive } from 'vue';
const data = reactive({
foo: 'bar',
baz: 42
});
data.foo = 'qux'; // triggers update in any components using `data`
```
In the example above, any changes made to the `data` object will be automatically detected and trigger updates in any components using `data`.
Reactive proxies can also be used in computed properties and methods:
```javascript
import { reactive, computed } from 'vue';
const data = reactive({
foo: 'bar',
baz: 42
});
const computedProp = computed(() => {
return `${data.foo} is ${data.baz}`;
});
console.log(computedProp.value); // "bar is 42"
```
In this example, the computed property `computedProp` depends on `data.foo` and `data.baz`, so it will be automatically updated when either of these values change.
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