请帮我优化下面的代码,解决错误 代码是: <template> <component :is="dynamicComponent" /> </template> <script> import axios from 'axios' import { compile, createApp,defineAsyncComponent } from 'vue' export default { data() { return { dynamicComponent: { template: '<div>Loading...</div>' }, renderFunction: null } }, async mounted() { const componentCode = await this.fetchComponentCode() const component = await eval(componentCode) this.dynamicComponent = defineAsyncComponent(() => component) }, methods: { async fetchComponentCode() { let param = { table: 't_code', where: " and ky='vue-test' " }; this.axios .post('/base/crud/list', param) .then(response => { if (response.data.success) { debugger return response.data.data[0].code } }) .catch(error => { }) } }, render() { } } </script>
时间: 2024-01-12 16:03:16 浏览: 32
下面是优化后的代码:
```
<template>
<component :is="dynamicComponent" />
</template>
<script>
import axios from 'axios'
import { defineAsyncComponent, createApp } from 'vue'
export default {
data() {
return {
dynamicComponent: defineAsyncComponent(() => import('./Loading.vue')),
componentCode: null
}
},
async mounted() {
const componentCode = await this.fetchComponentCode()
this.componentCode = componentCode
const component = this.createDynamicComponent(componentCode)
this.dynamicComponent = defineAsyncComponent(() => component)
},
methods: {
async fetchComponentCode() {
let param = { table: 't_code', where: " and ky='vue-test' " }
try {
const response = await this.axios.post('/base/crud/list', param)
if (response.data.success) {
return response.data.data[0].code
}
} catch (error) {
console.error(error)
}
},
createDynamicComponent(code) {
const app = createApp({
template: code
})
return app.component('dynamic-component')
}
}
}
</script>
```
优化后的代码主要做了以下几个方面的改进:
1. 在 data 中初始化 dynamicComponent 为一个 Loading 组件,避免一开始没有取到组件码时页面空白。
2. 将动态组件的创建逻辑封装成 createDynamicComponent 方法,将组件码作为参数传入,这样方便后面的调用。
3. 将 fetchComponentCode 方法中的 Promise 改写成 async/await,使代码更加简洁易读。
4. 将 axios 的 catch 中的代码改写成 console.error,这样可以更好地捕获错误信息。