1.propsData選項(xiàng)
<body>
<header></header>
<script type="text/javascript">
var header_a = Vue.extend({
template:`<p>{{message}}-{{a}}</p>`,
data:function(){
return{
message:'Hello,I am header.'
}
},
props:['a'],
});
//此處是標(biāo)簽 類名#header id則是.header
new header_a({propsData:{a:111}}).$mount('header');
</script>
</body>
2.computed選項(xiàng)
<body>
<div id="app">
<p>{{newPrice}}</p>
<ul>
<li v-for="news in reverNews">{{news.title}}-{{news.date}}</li>
</ul>
</div>
<script type="text/javascript">
var newsLists = [
{title:'戰(zhàn)“疫”中 習(xí)近平始終牽掛困難群眾',date:'2017/3/24'},
{title:'聲音·記“疫” 致敬這場(chǎng)戰(zhàn)疫的中堅(jiān)力量',date:'2017/3/25'},
{title:'清明追思 家國(guó)永念丨那些應(yīng)被銘記的戰(zhàn)“疫”瞬間',date:'2017/3/26'},
{title:'前行是最好的紀(jì)念',date:'2017/3/27'},
];
var app = new Vue({
el:'#app',
data:{
price:100,
newsList:newsLists,
},
computed:{
newPrice:function(){
return this.price = '￥' + this.price + '元';
},
reverNews:function(){
return this.newsList.reverse();//倒排序
}
},
})
</script>
</body>
3.methods選項(xiàng)
<body>
<div id="app">
<p>{{count}}</p>
<button @click="add(3,$event)">add</button>
<!-- 構(gòu)造器中調(diào)用methods方法 -->
<p><btn @click.native="add(5)"></btn></p>
</div>
<!-- 外部調(diào)用methods方法 -->
<button onclick="app.add(10)">外部ADD</button>
<script type="text/javascript">
var btn = {
template:`<button>組件ADD</button>`
}
var app = new Vue({
el:'#app',
data:{
count:1,
},
components:{
"btn":btn,
},
methods:{
add:function(num,event){
if(num != ''){
this.count += num;
}else{
this.count ++;
}
console.log(event);//event包括點(diǎn)擊操作的詳細(xì)信息列表
}
}
})
</script>
</body>
4.watch選項(xiàng)
<body>
<div id="app">
<p>今日溫度：{{temperature}} 度</p>
<p>穿衣建議：{{cloth}}</p>
<p><button @click="add()">升溫</button><button @click="less()">降溫</button></p>
</div>
<script type="text/javascript">
var clothsArr = [
"T恤短袖","夾克長(zhǎng)裙","羽絨服"
];
var app = new Vue({
el:'#app',
data:{
temperature:14,
cloth:'夾克長(zhǎng)裙',
},
methods:{
add:function(){
this.temperature += 5;
},
less:function(){
this.temperature -= 5;
}
},
//watch寫(xiě)在構(gòu)造器內(nèi)部
//watch:{
// temperature:function(newVal,oldVal){
// if(newVal >= 26){
// this.cloth = clothsArr[0];
// }else if(newVal < 26 && newVal >0){
// this.cloth = clothsArr[1];
// }else{
// this.cloth = clothsArr[2];
// }
// }
//}
})
//watch寫(xiě)在構(gòu)造器外部
app.$watch('temperature',function(newVal,oldVal){
if(newVal >= 26){
this.cloth = clothsArr[0];
}else if(newVal < 26 && newVal >0){
this.cloth = clothsArr[1];
}else{
this.cloth = clothsArr[2];
}
});
</script>
</body>
5.mixins混入
<body>
<h1>mixins option<h1>
<hr>
<div id="app">
<p>{{num}}</p>
<p><button @click="add()">增加1</button></p>
</div>
<script type="text/javascript">
var addConsole = {
updated:function(){
//生命周期
console.log('數(shù)據(jù)發(fā)生變化，變成了'+this.num);
}
};
Vue.mixin({
updated:function(){
console.log('我是全局的混入');//最先執(zhí)行1
}
});
var app = new Vue({
el:'#app',
data:{
num:1,
},
methods:{
add:function(){
this.num ++;
}
},
updated:function(){
console.log('我是原生的updated');//后執(zhí)行3
},
//混入的先執(zhí)行2
mixins:[addConsole]
})
</script>
</body>
6.extends擴(kuò)展
<body>
<div id="app">
<p>${num}</p>
<p><button @click="add()">增加1</button></p>
</div>
<script type="text/javascript">
var extendObj = {
updated:function(){
console.log('我是擴(kuò)展的updated方法');
},
methods:{//方法名一樣，只執(zhí)行原生的方法。
add:function(){
console.log('我是擴(kuò)展出來(lái)的的方法add');
this.num ++;
}
}
}
var app = new Vue({
el:'#app',
data:{
num:1,
},
methods:{
add:function(){
console.log('我是原生的方法add');
this.num ++;
}
},
updated:function(){
console.log('我是原生的updated');
},
extends:extendObj,//只能有1個(gè)擴(kuò)展
delimiters:['${','}']//差值形式{{}}改成 ${}
})
</script>
</body>
