天气预报.html 

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>weather</title>
</head>
<body>
    <h1>城市天气预报查询</h1>
    <input type="text"/>
    <button>查询</button>
    <div class="box">
        <h3 class="city"></h3>
        <p class="udt"></p>
        <p class="wendu">现在的温度是：30度</p>
        <p>最高温度是40度</p>
        <p>最低温度是：20度</p>
    </div>
    <script type="text/javascript">
    var btn=document.querySelector("button");
    var txt=document.querySelector("input");
    btn.onclick=function(){
        var val=txt.value;
        var xhr=new XMLHttpRequest();
        xhr.open('get','http://wthrcdn.etouch.cn/WeatherApi?city='+val);
        xhr.onreadystatechange=function(){
            if(xhr.readyState == 4 && xhr.status == 200){
                console.log(xhr.responseXML);

                var resp = xhr.responseXML.querySelector('resp')
                console.log(resp);
                var city = resp.querySelector('city').innerHTML;
                console.log(city);
                var updateTime = resp.querySelector('updatetime').innerHTML;
                var wendu = resp.querySelector('wendu').innerHTML;
                document.querySelector(".city").innerHTML='查询的城市是：'+city; 
                document.querySelector(".udt").innerHTML='更新的时间是：'+updateTime; 
                document.querySelector(".wendu").innerHTML='现在的温度是：'+wendu+"℃"; 
            }
        }
        xhr.send()
    }
    </script>
</body>
</html>

 

posted @ 2021-07-29 15:04  hycsuper  阅读(390)  评论(0)    收藏  举报