'onMounted' is read-only
时间: 2024-05-05 12:16:13 浏览: 5
As an AI language model, I am not sure which programming language you are referring to. However, in general, "onMounted" is a lifecycle hook or method that is used in some frontend frameworks like Vue.js, React.js, or Svelte.js.
The error message "onMounted is read-only" typically means that you are trying to modify or assign a new value to the "onMounted" property, which is not allowed because it is a read-only property that is automatically set by the framework.
For example, in Vue.js, you might see this error if you try to write:
```
export default {
data() {
return {
message: "Hello, world!",
};
},
onMounted() {
console.log("Component mounted!");
},
};
```
Instead, you should define the "onMounted" method using the "mounted" hook as follows:
```
export default {
data() {
return {
message: "Hello, world!",
};
},
mounted() {
console.log("Component mounted!");
},
};
```
This way, the "onMounted" property will be automatically set by the framework to reference the "mounted" method, and you can use it as a read-only property.