vue确实高效，这天气预报页面要是换react，估计得写半天。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0,user-scalable=no">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>天气预报-Vue</title>
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.14/dist/vue.js"></script>
<script src="https://unpkg.com/axios/dist/axios.min.js"></script>
</head>
<body>
<div id="weather">
<div id="sbox">
<input type="text" v-model="city" placeholder="请输入查询城市" @keyup.enter="searchWeather">
<button @click="searchWeather">查 询</button>
</div>
<div>
<a href="javascript:;" @click="changeCity('北京')">北京</a>
<a href="javascript:;" @click="changeCity('上海')">上海</a>
<a href="javascript:;" @click="changeCity('杭州')">杭州</a>
<a href="javascript:;" @click="changeCity('深圳')">深圳</a>
</div>
<h2>{{city}}</h2>
<ul>
<li v-for="item in weatherList">
<div>
<span>{{item.type}}</span>
</div>
<div>
<b>{{item.low}}</b>~<b>{{item.high}}</b>
</div>
<div><span>{{item.date}}</span></div>
</li>
</ul>
</div>
<script>
const vm = new Vue({
el:"#weather",
data:{
city:'',
weatherList:[]
},
methods:{
searchWeather:function(){
var that=this;
axios.get('http://wthrcdn.etouch.cn/weather_mini?city='+this.city)
.then(function(response){
that.weatherList=response.data.data.forecast
})
.catch(function(err){})
},
changeCity:function (city) {
this.city=city;
this.searchWeather()
}
}
}
)
</script>
</body>
</html>
