引用在vue组件的data选项,不因数值被改变而更新
引在在vue组件的computed选项,因数值变化而更组件
案例代码如下,调整下引用vue和vuex地址即可展示
<!DOCTYPE html> <html> <head> <title> vuex的配置state,mutations 和vue组件调用及模板组件</title> <script src="js/vue.js" type="text/javascript"></script> <script src="js/vuex.js" type="text/javascript"></script> <meta charset="utf-8"/> </head> <body> <div id="app"> {{msg}} <!-- 此处渲染count来自vue组件,computed选项,随值改变而改变渲染 --> <h3>{{count}}</h3> <!-- 此处渲染count2来自vue组件data选项,不随值改变而改变渲染 --> <h3>{{count2}}</h3> <!-- 直接调用vuex的state选项,不推荐,推荐是computed引用后再洹染 --> <h3>{{this.$store.state.count}}</h3> <input type=‘button‘ value="clickme +" v-on:click=‘incrementCount‘> <hr/> <!-- 组件名称有大小写,模板调用用短线隔开 如:studentV 转换成student-v --> <student-v></student-v> </div> <script> const store = new Vuex.Store({ state: { count: 0, student:‘学生信息‘ }, mutations: { increment (state) { state.count++ } } }) // 创建一个 student 组件 const studentV = { template: `<div>{{ student }}</div>`, computed: { student () { return store.state.student+" "+store.state.count } } } var app=new Vue({ el:‘#app‘, data(){ return{ msg:‘app.vue 组件‘, count2:this.$store.state.count } }, store, components:{studentV}, computed:{ count:function(state) { return this.$store.state.count } }, methods:{ incrementCount:function(){ //引用 vuex下的mutations选项书写的函数 return this.$store.commit(‘increment‘) } } }) </script> </body> </html>
原文地址:https://www.cnblogs.com/asplover/p/11356397.html
时间: 2024-10-08 22:02:19