目录
1 在作业.html的代码基础上，完成商品数量的加减，注意商品数量如果低于0个，则自动删除当前商品
2 在作业.html的代码基础仧，完成购物车总价格的计算
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
#goods table{
600px;
border:1px solid #000;
border-collapse: collapse;
}
#goods td,#goods th{
border: 1px solid #000;
}
#goods .box{
position: fixed;
top: 0;
left: 0;
right: 0;
bottom: 0;
margin: auto;
background-color: #eee;
280px;
height: 160px;
padding: 40px 80px;
}
</style>
<script src="/vue/vue.js"></script>
</head>
<body>
<!--1. 在作业.html的代码基础上，完成商品数量的加减，注意商品数量如果低于0个，则自动删除当前商品-->
<!--2. 在作业.html的代码基础仧，完成购物车总价格的计算。-->
<div id="goods">
<button @click="is_show=true;goods_index=-1;">添加商品</button>
<table>
<tr>
<th>商品编号</th>
<th>商品标题</th>
<th>商品数量</th>
<th>商品价格</th>
<th>操作</th>
</tr>
<tr v-for="goods,index in goods_list">
<td>{{index+1}}</td>
<td>{{goods.name}}</td>
<td>
<button @click="sub(index)">-</button>
<input type="text" size="2" v-model="goods.num">
<button @click="goods.num++">+</button>
</td>
<td>{{goods.price.toFixed(2)}}</td>
<td>
<button @click="update(index)">编辑</button>
<button @click="del(index)">删除</button>
</td>
</tr>
<tr>
<td colspan="5">总计： {{sum}}元</td>
</tr>
</table>
<div class="box" v-show="is_show">
商品标题: <input type="text" v-model="goods_name"><br><br>
商品数量: <input type="text" v-model="goods_num"><br><br>
商品价格: <input type="text" v-model="goods_price"><br><br>
<button @click="save">保存</button>
<button @click="cancel">取消</button>
</div>
</div>
<script>
var vm = new Vue({
el:"#goods",
data:{
is_show:false,
goods_name:"",
goods_num:"",
goods_price:"",
goods_index:-1, // 当前本次操作的商品信息[-1表示新增,大于0表示编辑]
goods_list:[
{"name":"python入门","num":27,"price":150},
{"name":"python进阶","num":21,"price":100},
{"name":"python高级","num":17,"price":75},
{"name":"python研究","num":37,"price":60},
{"name":"python放弃","num":57,"price":110},
]
},
methods:{
save(){
// 保存数据[添加数据]
if(this.goods_index==-1){
this.goods_list.push({
"name":this.goods_name,
"num":parseInt(this.goods_num),
"price":parseFloat(this.goods_price),
});
}else{
this.goods_list[this.goods_index].name=this.goods_name;
this.goods_list[this.goods_index].num=parseInt(this.goods_num);
this.goods_list[this.goods_index].price=parseFloat(this.goods_price);
}
this.cancel();
},
cancel(){
this.is_show=false;
this.goods_index= -1;
this.goods_name= "";
this.goods_num= "";
this.goods_price= "";
},
del(index){
// 删除数据
this.goods_list.splice(index,1);
},
update(index){
// 先弹窗
this.is_show=true;
// 显示当前编辑的商品信息
this.goods_index=index;
this.goods_name=this.goods_list[index].name;
this.goods_num=this.goods_list[index].num;
this.goods_price=this.goods_list[index].price;
// 当用户点击保存时，修改对应数据
},
sub(index){
let num = this.goods_list[index].num
console.log(num)
if(num==0){
this.goods_list.splice(index,1)
}else {
this.goods_list[index].num--
}
}
},
computed:{
sum(){
let all_count = 0
for(var i=0;i<this.goods_list.length;i++){
all_count += this.goods_list[i].num*this.goods_list[i].price
}
return all_count
}
},
})
</script>
</body>
</html>
3 使用ajax获取北京天气，并把昨天和未来5天天气情况以表格格式展示到html页面中。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link href="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
<script src="https://cdn.bootcss.com/twitter-bootstrap/3.4.1/js/bootstrap.min.js"></script>
<script src="/vue/vue.js"></script>
<script src="https://cdn.bootcdn.net/ajax/libs/axios/0.19.2/axios.js"></script>
</head>
<body>
<div id="app">
<table class="table table-hover">
<thead>
<tr>
<th>时间</th>
<th>风力</th>
<th>风向</th>
<th>最高温</th>
<th>最低温</th>
</tr>
</thead>
<tbody>
<tr v-for="city_weather in weather">
<td>{{city_weather.date}}</td>
<td>{{city_weather.fengli}}</td>
<td>{{city_weather.fengxiang}}</td>
<td>{{city_weather.high}}</td>
<td>{{city_weather.low}}</td>
</tr>
</tbody>
</table>
<input type="text" v-model="city">
<button @click="get_weather" class="btn btn-info" >点击</button>
</div>
<script>
let vm = new Vue({
el:'#app',
data:{
city:'北京',
weather:[]
},
methods:{
get_weather(){
axios.get("http://wthrcdn.etouch.cn/weather_mini?city="+this.city)
.then(response=>{
this.weather=response.data.data.forecast
}).catch(error=>{
console.log(error.data)
})
}
}
})
</script>
</body>
</html>