Vue中元件化編碼的大緻流程(初接觸)、元件之間的參數傳遞(最基礎的形式)、元件之間的配合完成一個需求
1、在Vue中進行元件化編碼
1.1、元件化編碼流程:
- (1)、拆分靜态元件:元件要按照功能點拆分,命名不要與html元素沖突。
-
(2)、實作動态元件:考慮好資料的存放位置,資料是一個元件在用,還是一些元件在用:
1)、一個元件在用:放在元件自身即可。
2)、 一些元件在用:放在他們共同的父元件上(狀态提升)。
- (3)、實作互動:從綁定事件開始。
1.2、props适用于:
- (1)、父元件 ==> 子元件 通信
- (2)、子元件 ==> 父元件 通信(要求父先給子一個函數)
1.3 、注意事項
使用v-model時要切記:v-model綁定的值不能是props傳過來的值,因為props是不可以修改的
props傳過來的若是對象類型的值,修改對象中的屬性時Vue不會報錯,但不推薦這樣做。
2、任務需求(需要實作的效果)
3、項目結構
4、代碼執行個體
4.1 TheFooter.vue
<template>
<div class="todo-footer" >
<!-- <input type="checkbox" :checked="isAll" @change="checkAll"/> -->
<input type="checkbox" />
<span> 已完成2/全部3</span>
<button class="btn btn-danger">清除已完成任務</button>
</div>
</template>
<script>export default {
name: "TheFooter",
methods: {},
};</script>
<style scoped>/*footer*/
.todo-footer {
height: 40px;
line-height: 40px;
padding-left: 6px;
margin-top: 5px;
}
.todo-footer label {
display: inline-block;
margin-right: 20px;
cursor: pointer;
}
.todo-footer label input {
position: relative;
top: -1px;
vertical-align: middle;
margin-right: 5px;
}
.todo-footer button {
float: right;
margin-top: 5px;
}</style>
4.2 TheHeader.vue
<template>
<div class="todo-header">
<input type="text" placeholder="請輸入你的任務名稱,按Enter鍵确認" />
</div>
</template>
<script>export default {
name: "TheHeader",
data() {
return {};
},
methods: {},
};</script>
<style scoped>/*header*/
.todo-header input {
width: 560px;
height: 28px;
font-size: 14px;
border: 1px solid #ccc;
border-radius: 4px;
padding: 4px 7px;
}
.todo-header input:focus {
outline: none;
border-color: rgba(82, 168, 236, 0.8);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075),
0 0 8px rgba(82, 168, 236, 0.6);
}</style>
4.3 TheItem.vue
<template>
<div>
<li>
<label>
<input type="checkbox" />
<span>吃飯</span>
</label>
<button>删除</button>
</li>
<li>
<label>
<input type="checkbox" />
<span>睡覺</span>
</label>
<button>删除</button>
</li>
<li>
<label>
<input type="checkbox" />
<span>打豆豆</span>
</label>
<button>删除</button>
</li>
</div>
</template>
<script>export default {
name: "MyItem",
data() {},
methods: {},
};</script>
<style scoped>/*item*/
li {
list-style: none;
height: 36px;
line-height: 36px;
padding: 0 5px;
border-bottom: 1px solid #ddd;
}
li label {
float: left;
cursor: pointer;
}
li label li input {
vertical-align: middle;
margin-right: 6px;
position: relative;
top: -1px;
}
li button {
float: right;
margin-top: 3px;
}
li:before {
content: initial;
}
li:last-child {
border-bottom: none;
}
li:hover {
background-color: #ddd;
}
li:hover button {
display: block;
}</style>
4.4 TheList.vue
<template>
<ul class="todo-main">
<TheItem />
</ul>
</template>
<script>import TheItem from "./TheItem";
export default {
name: "TheList",
components: { TheItem },
};</script>
<style scoped>/*main*/
.todo-main {
margin-left: 0px;
border: 1px solid #ddd;
border-radius: 2px;
padding: 0px;
}
.todo-empty {
height: 40px;
line-height: 40px;
border: 1px solid #ddd;
border-radius: 2px;
padding-left: 5px;
margin-top: 10px;
}</style>
4.5 App.vue
<template>
<div id="root">
<div class="todo-container">
<div class="todo-wrap">
<TheHeader />
<TheList />
<TheFooter />
</div>
</div>
</div>
</template>
<script>import TheHeader from "./components/TheHeader";
import TheList from "./components/TheList";
import TheFooter from "./components/TheFooter.vue";
export default {
name: "App",
components: { TheHeader, TheList, TheFooter },
data() {
return {};
},
methods: {},
};</script>
<style>/*base*/
body {
background: #fff;
}
.btn {
display: inline-block;
padding: 4px 12px;
margin-bottom: 0;
font-size: 14px;
line-height: 20px;
text-align: center;
vertical-align: middle;
cursor: pointer;
box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
0 1px 2px rgba(0, 0, 0, 0.05);
border-radius: 4px;
}
.btn-danger {
color: #fff;
background-color: #da4f49;
border: 1px solid #bd362f;
}
.btn-danger:hover {
color: #fff;
background-color: #bd362f;
}
.btn:focus {
outline: none;
}
.todo-container {
width: 600px;
margin: 0 auto;
}
.todo-container .todo-wrap {
padding: 10px;
border: 1px solid #ddd;
border-radius: 5px;
}</style>
4.6 main.js
// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
Vue.config.productionTip = false
/* eslint-disable no-new */
new Vue({
el: '#app',
router,
components: { App },
template: '<App/>'
})