1.组件：是vue最强大的功能之一，组件化开发，可以扩展HTML元素，封装可重用代码。（分为全局和局部）
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="name">
<my></my>
</div>
<script src="js/vue.js"></script>
<script>
Vue.component("my",{
template:`
<div>
<h1>fdsfg</h1>
<button @click="alt">anniu</button>
</div>
`
,
data:function(){
return{
msg:"gdshjfgsjg"
}
},
methods:{
alt:function(){
alert:(fdsffg)
}
}
})
new Vue({
el:"#name",
})
</script>
</body>
</html>
2.组件之间的传值
父传子：用属性传
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<my-content></my-content>
</div>
<script src="js/vue.js"></script>
<script>
Vue.component("my-content",{
template:`
<div>
<h2>我是my-content组件的标题</h2>
<my-child v-bind:message="msg"></my-child>
</div>
`
,
data:function(){
return{
msg:"sfdsfsdfdsfds"
}
}
})
Vue.component("my-child",{
props:["message"],
template:`
<div>
<h3>我是my-child组件中的标题</h3>
<p>{{message}}</p>
</div>
`
})
new Vue({
el:"#app"
})
</script>
</body>
</html>
子传父:用事件传
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<my-father></my-father>
</div>
<script src="js/vue.js"></script>
<script>
Vue.component("my-father",{
template:`
<div>
<h1>{{mess}}</h1>
<my-child v-bind:send='list'></my-child>
<input type="text" v-model="msg"/>
</div>
`,
data:function(){
return{
mess:"guhg"
}
}
})
Vue.component("my-child",{
template:`
<button @click="sendFather">添加<button>
`,
data:function(){
return{
msg:""
}
},
methods:{
sendFather:function(){
this.$emit("push",this.msg)
}
}
})
new Vue({
el:"#app"
})
</script>
</body>
</html>
3.实例
水果列表
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<div id='app'>
<my-father></my-father>
</div>
<script src='js/vue.js'></script>
<script>
Vue.component('my-father',{
template:`
<div>
<input type='text' v-model='fruit'> <button @click='add'>添加</button>
<my-child v-bind:fruList='list'></my-child>
</div>
`,
data:function(){
return{
list:['apple','pear','orange'],
fruit:''
}
},
methods:{
add:function(){
this.list.push(this.fruit)
}
}
})
Vue.component('my-child',{
props:['fruList'],
template:`
<ul>
<li v-for="(value,index) in fruList">
{{value}}
<button @click='delt(index)'>删除</button>
</li>
</ul>
`,
methods:{
delt:function(ind){
this.fruList.splice(ind,1)
}
}
})
new Vue({
el:'#app'
})
</script>
</body>
</html>
添加
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<div id="app">
<my-father></my-father>
</div>
<script src="js/vue.js"></script>
<script>
Vue.component("my-father",{
template:`
<div>
<input type="text" v-model="txt"/>
<button @click="add">添加</button>
<my-list v-bind:fruit="arr"></my-list>
</div>
`
,
data:function(){
return{
arr:[1,2,3,4]
}
},
methods:{
add:function(){
this.arr.push(this.txt),
this.txt=''
}
}
})
Vue.component("my-list",{
props:["fruit"],
template:`
<ul>
<li v-for="(value,index) in fruit">{{value}} <button @click="del(index)">删除</button></li>
</ul>
`
,
methods:{
del:function(ind){
this.fruit.splice(ind,1)
}
}
})
new Vue({
el:"#app"
})
</script>
</body>
</html>
购物车
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<link rel="stylesheet" type="text/css" href="css/bootstrap.css"/>
</head>
<body>
<div id="app">
<my-father></my-father>
</div>
<script src="js/vue.js"></script>
<script>
Vue.component("my-father",{
template:`
<div class="container">
<table class="table table-bordered text-center">
<thead>
<tr>
<th class='text-center'>编号</th>
<th class='text-center'>名称</th>
<th class='text-center'>单价</th>
<th class='text-center'>数量</th>
<th class='text-center'>小计</th>
</tr>
</thead>
<my-child v-bind:list="fruList"></my-child>
</table>
</div>
`,
data:function(){
return{
fruList:[
{pname:'apple',price:3,count:3,sub:9},
{pname:'pear',price:4,count:4,sub:16},
{pname:'orange',price:5,count:5,sub:25}
]
}
}
})
Vue.component("my-child",{
props:["list"],
template:`
<tbody>
<tr v-for="(value,index) in list">
<td>{{index+1}}</td>
<td>{{value.pname}}</td>
<td>{{value.price}}</td>
<td>
<button @click="add(index)">+</button>
<span> {{value.count}}</span>
<button @click="redu(index)">-</button>
</td>
<td>{{value.sub}}</td>
<tr>
<td colspan=5>总价:{{sum}}</td>
</tr>
</tr>
</tbody>
`,
data:function(){
return{
sum:0
}
},
methods:{
add:function(ind){
this.list[ind].count++;
//计算小计
this.list[ind].sub=this.list[ind].count*this.list[ind].price;
this.countSum();
},
redu:function(ind){
if(this.list[ind].count>1){
this.list[ind].count--
}
//计算小计
this.list[ind].sub=this.list[ind].count*this.list[ind].price;
this.countSum();
},
countSum:function(){
for(var i=0,total=0;i<this.list.length;i++){
total+=this.list[i].sub;
}
this.sum=total;
}
}
})
new Vue({
el:"#app"
})
</script>
</body>
</html>
S
网友评论