{"id":12045,"date":"2020-11-28T21:22:41","date_gmt":"2020-11-28T13:22:41","guid":{"rendered":"http:\/\/yidianhulian.com\/?p=12045"},"modified":"2020-11-28T21:22:43","modified_gmt":"2020-11-28T13:22:43","slug":"vue2-%e5%8d%87%e7%ba%a7-vue3%e6%8c%87%e5%8d%97","status":"publish","type":"post","link":"https:\/\/yidianhulian.com\/?p=12045","title":{"rendered":"vue2 \u5347\u7ea7 vue3\u6307\u5357"},"content":{"rendered":"\n

\u6ce8\u518c\u5168\u5c40\u7ec4\u4ef6<\/h2>\n\n\n\n

2.0\uff1a<\/p>\n\n\n\n

Vue.component('UITreeBase', UITreeBase)<\/em><\/pre>\n\n\n\n
3.0\uff1a<\/p>\n\n\n\n
const app = createApp(App)
\/\/ \u4f5c\u4e3a\u5168\u5c40\u7ec4\u4ef6\u907f\u514d\u4ea4\u53c9\u5f15\u7528
<\/em>app.component('UITreeBase', UITreeBase)<\/pre>\n\n\n\n
Vuex<\/h2>\n\n\n\n
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
  modules: {
    design,
    user
  }
})<\/pre>\n\n\n\n
3.0:<\/p>\n\n\n\n
import { createStore <\/em>} from 'vuex'
export default createStore<\/em>({
  modules: {
    design,
    user
  }
})<\/pre>\n\n\n\n
computed\u4e2d\u7684mapState<\/h2>\n\n\n\n
import { mapState } from 'vuex'
computed: {
  \u2026mapState({
    sideBars: (state: any) => state.design.leftSidebars,
    leftSidebarMinWidth: (state: any) => state.design.leftSidebarMinWidth,
    pageScale: (state: any) => state.design.scale
  })
}<\/pre>\n\n\n\n
3.0<\/p>\n\n\n\n
const leftSidebarMinWidth = computed<\/em>((ctx: any) => ctx.$store.state.design.leftSidebarMinWidth)\nconst leftSidebarWidth = computed<\/em>({\nget () {\nreturn this.$store.state.design.leftSidebarWidth\n},\nset (v: number) {\nthis.$store.commit('updateState', { leftSidebarWidth: v })\n}\n})<\/pre>\n\n\n\n
setup\u4e2d\u7684this<\/h2>\n\n\n\n
import { ref<\/em>, reactive<\/em>, computed<\/em>, watch<\/em>, onMounted, getCurrentInstance } from 'vue'\nconst { ctx } = getCurrentInstance()<\/pre>\n\n\n\n
store<\/h2>\n\n\n\n
2.0 \u8c03\u7528store\u662f\u76f4\u63a5\u901a\u8fc7this.$store.commit\/dispatch<\/p>\n\n\n\n
3.0 <\/p>\n\n\n\n
import { useStore <\/em>} from 'vuex'\nconst store = useStore<\/em>()\nstore.commit('updateState', { rightSidebarIsOpen: v })<\/pre>\n\n\n\n

\u5982\u679c\u662f\u8981\u4f7f\u7528$store\u7684\u8bdd\uff0c\u9700\u8981\u5728src\u76ee\u5f55\u4e0b\u9762\u521b\u5efa\u4e00\u4e2ashims-vux.d.ts\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b<\/p>\n\n\n\n
import { Store } from 'vuex'\nimport { State } from '.\/store'\n\ndeclare module '@vue\/runtime-core' {\n  interface ComponentCustomProperties {\n    $store: Store<State>\n  }\n}\n\n\n\n\/\/ Vuex@4.0.0-beta.1 is missing the typing for `useStore`. See https:\/\/github.com\/vuejs\/vuex\/issues\/1736\n\ndeclare module 'vuex' {\n  export function useStore(key?: string): Store<State>\n}<\/pre>\n\n\n\n
\u6ce8\u610f\uff1a.$store\u7528\u6cd5\u867d\u7136\u80fd\u7f16\u8bd1\u901a\u8fc7\uff0c\u4f46\u4f3c\u4e4e\u5e76\u4e0d\u80fd\u60f3\u671f\u671b\u76842.0\u90a3\u6837\u5de5\u4f5c\uff1buseStore()\u5728setup\u91cc\u9762\u8c03\u7528\uff0c\u5982\u679c\u5728\u65b9\u6cd5\u91cc\u9762\u8c03\u7528\uff0c\u6216\u5219\u5728computed\u7684get\uff0cset\u91cc\u9762\u8c03\u7528useStore()\u8fd4\u56de\u7684\u662fundefined<\/span><\/strong><\/p><\/blockquote>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
$refs<\/h2>\n\n\n\n
2.0 \u76f4\u63a5\u7528this.$refs.XXX\u5f15\u7528<\/p>\n\n\n\n
3.0 \u76f4\u63a5\u9700\u8981const refName = ref(), \u7136\u540esetup\u4e2d\u8fd4\u56derefName\u5373\u53ef<\/strong>\uff0crefName\u5c31\u662fref=\u201crefName\u201d\u4e2d\u7684\u540d\u5b57<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
$nextTick<\/h2>\n\n\n\n
import { nextTick <\/em>} from 'vue'<\/pre>\n\n\n\n
Vue.component<\/h2>\n\n\n\n
2.x \u52a8\u6001\u6ce8\u518c\u7ec4\u4ef6<\/p>\n\n\n\n
Vue.component(
  name,
  (resolve) => {
    \/\/ console.log(`@\/components\/ui\/${this.ui}_${this.uiVersion}\/${this.uiconfig.type}.vue`)
<\/em>    <\/em>require([`@\/components\/ui\/${this.ui}_${this.uiVersion}\/${this.uiconfig.type}.vue`], resolve)
  }
)<\/pre>\n\n\n\n
Vue.config.productionTip<\/h2>\n\n\n\n
3.x \u5df2\u5220\u9664\u8be5\u9009\u9879<\/p>\n\n\n\n
\"\"\/<\/figure>\n\n\n\n
Write operation failed: computed value is readonly<\/h2>\n\n\n\n
\u8fd9\u4e2a\u8b66\u544a\u6709\u51e0\u79cd\u60c5\u51b5\uff1a<\/p>\n\n\n\n
  1. \u5bf9\u5e94computed\u6ca1\u6709\u5b9a\u4e49set, \u5b9a\u4e49\u5bf9\u5e94\u7684set\u5373\u53ef<\/li>
  2. store\u4e2d\u4f7f\u7528\u4e86[]\u8bed\u6cd5\uff0c\u6bd4\u5982state[name] = value\uff1a<\/li><\/ol>\n\n\n\n
    <\/p>\n","protected":false},"excerpt":{"rendered":"
    \u6ce8\u518c\u5168\u5c40\u7ec4\u4ef6 2.0\uff1a Vue.component(‘UITreeBase’, UITreeBase) 3.0 … \u7ee7\u7eed\u9605\u8bfbvue2 \u5347\u7ea7 vue3\u6307\u5357<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_links_to":"","_links_to_target":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/posts\/12045"}],"collection":[{"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12045"}],"version-history":[{"count":4,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/posts\/12045\/revisions"}],"predecessor-version":[{"id":12059,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=\/wp\/v2\/posts\/12045\/revisions\/12059"}],"wp:attachment":[{"href":"https:\/\/yidianhulian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12045"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12045"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yidianhulian.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12045"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}