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                >[success] # Vue3.x -- 基礎知識速覽 ~~~ 1.需要你有vue2.x 基礎,通過cd 引入的例子速覽一下整個vue 語法 ~~~ >[info] ## 3.x vs 2.x 創建實例 ~~~ 1.'2.x' 和 '3.x' 整體創建形式有了很大的更改,在'3.x' 不在使用通過'new Vue' 形式創建Vue 實例,而是改用 'createApp',并且'3.x' 不在是通過'el' 和'$mount' 將數據渲染和dom綁定,而是通過新的'mount' 形式 2.'3.x' data 組件選項聲明不再接收純 JavaScript object,而需要 function 聲明 ~~~ >[danger] ##### 對比說明 * vue2 ~~~ var vm = new Vue({ // el:'#app', 或者使用el形式不使用$mount data: { counter: '10', }, }).$mount('#app') ~~~ * vue3 ~~~ // 創建vue const vm = Vue.createApp({ data() { return {} }, methods: {}, }) vm.mount('#app') ~~~
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