【学习笔记】ajax请求网络api
不啰嗦，直接上代码：
1、在浏览器输入网址：http://api.asilu.com/weather/?callback=getname&city=深圳
你会看到如下结果：他返回的是json数据
/** api.asilu.com **/getname({"city":"深圳","pm25":"28","weather":[{"date":"周一 09月10日","icon1":"day\/duoyun","icon2":"night\/duoyun","weather":"多云","wind":"无持续风向微风","temp":"31 ~ 25℃"},{"date":"周二","icon1":"day\/duoyun","icon2":"night\/duoyun","weather":"多云","wind":"无持续风向微风","temp":"31 ~ 27℃"},{"date":"周三","icon1":"day\/leizhenyu","icon2":"night\/leizhenyu","weather":"雷阵雨","wind":"东风4-5级","temp":"31 ~ 26℃"},{"date":"周四","icon1":"day\/zhenyu","icon2":"night\/zhenyu","weather":"阵雨","wind":"东风3-4级","temp":"30 ~ 26℃"}],"date":"2018-09-10","id":"101280601","t":1536508800});
整理之后是这样的：
/** api.asilu.com **/ getname({ "city": "深圳", "pm25": "28", "weather": [{ "date": "周一 09月10日", "icon1": "day\/duoyun", "icon2": "night\/duoyun", "weather": "多云", "wind": "无持续风向微风", "temp": "31 ~ 25℃" }, { "date": "周二", "icon1": "day\/duoyun", "icon2": "night\/duoyun", "weather": "多云", "wind": "无持续风向微风", "temp": "31 ~ 27℃" }, { "date": "周三", "icon1": "day\/leizhenyu", "icon2": "night\/leizhenyu", "weather": "雷阵雨", "wind": "东风4-5级", "temp": "31 ~ 26℃" }, { "date": "周四", "icon1": "day\/zhenyu", "icon2": "night\/zhenyu", "weather": "阵雨", "wind": "东风3-4级", "temp": "30 ~ 26℃" }], "date": "2018-09-10", "id": "101280601", "t": 1536508800 });
2、怎样才能获取上述json的数据呢？很简单：
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>ajax</title>
</head>
<body>
<h1>天气查询</h1>
<input type="text" placeholder="请输出你的地址" id="tel"/>
<button id="ajax">确定</button>
<p><span id="reslut"></span></p>
<script type="text/javascript" src="jquery-3.3.1/jquery-3.3.1.js"></script>
<script type="text/javascript">
$(function(){
$('#ajax').on('click',function(){
var $telValue=$('#tel').val();
if($telValue=="") {
alert('不能为空！');
return;
}
$.ajax({
type: 'GET',
dataType:'jsonp',
url: 'http://api.asilu.com/weather/?callback=getname&city='+$telValue,
success: function(data){
var reslutData=data;
console.log(reslutData);
$('#reslut').text("你查询的是:"+reslutData.city+","+"明天的天气是:"+reslutData.weather[0].weather);
}
})
})
})
</script>
</body>
</html>
3、效果图是这样的：
4、完毕。
