一、props通訊javascript
注意:DOM模板的駝峯命名props要轉爲短橫分割命名。css
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <title>Vue</title> </head> <body> <div id="app"> <my-component message='來自父組件的數據' warning-text="提示信息"></my-component> </div> <script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script> <script type="text/javascript"> Vue.component('my-component', { template: '<div>{{warningText}}:{{message}}</div>', props: ['message', 'warningText'] }) new Vue({ el: "#app" }) </script> </body> </html>
傳遞動態數據(v-bind):html
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <title>Vue</title> </head> <body> <div id="app"> <input type="text" v-model="parentMessage" /> <my-component :message='parentMessage'></my-component> </div> <script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script> <script type="text/javascript"> Vue.component('my-component', { template: '<div>{{message}}</div>', props: ['message'] }) new Vue({ el: "#app", data: { parentMessage: '' }//前端全棧開發交流羣: })//866109638 </script>//幫助1-3年工做人員 </body>//突破技術瓶頸,提高思惟能力 </html>
二、單向數據流前端
(1)子組件保存父組件傳遞過來的值,在子組件本身的做用域下修改和使用。vue
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <title>Vue</title> </head> <body> <div id="app"> <my-component :init-count='1'></my-component> </div> <script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script> <script type="text/javascript"> Vue.component('my-component', { template: '<div>{{initCount}}</div>', props: ['initCount'], data: function() { return this.initCount } }) new Vue({ el: "#app" }) </script> </body> </html>
(2)使用計算屬性java
<!DOCTYPE html> <html lang="zh"> <head> <meta charset="UTF-8" /> <title>Vue</title> </head>//前端全棧交流學習圈: //866109386,幫助1-3年前端人員 <body>//突破技術瓶頸,提高思惟能力 <div id="app"> <my-component :width='100'></my-component> </div> <script src="https://cdn.bootcss.com/vue/2.5.9/vue.min.js"></script> <script type="text/javascript"> Vue.component('my-component', { template: '<div :style="style">組件內容</div>', props: ['width'], computed: { style: function() { return { width: this.width + 'px' } } } }) new Vue({ el: "#app" }) </script> </body> </html>