VueJS 不适用于移动设备

Question

我在移动设备上运行 VueJS 时遇到问题。我在 copen.io 上创建了一个天气预报应用程序

这里是项目的链接：

http://codepen.io/techcater/pen/xOZmgv

HTML 代码：

<div class="container-fluid text-center">
      <h1>Your Local Weather</h1>
      <p>
        {{location}}
      </p>
      <p>
        {{temperature}}
        <a @click="changeDegree">{{degree}}</a>
      </p>
      <p>
        {{weather | capitalize}}
      </p>

      <img :src="iconURL" alt="" />
      <br>
      <a href="https://ca.linkedin.com/in/dalenguyenblogger" target="_blank">by Dale Nguyen</a>
<!--   <pre>{{$data | json}}</pre> -->
    </div>

JS代码：

new Vue({
        el: '.container-fluid',

        data: {
          location: "",
          temperature: "",
          degree: "C",
          weather: "",
          iconURL: ""
        },

        created: function(){
          this.getWeather();
        },

        methods: {
          getWeather: function(){
            var that = this;

            this.$http.get("http://ipinfo.io").then((response) => {
                  console.log(response.data);
                  that.location = response.data.city + ", " + response.data.country;

                  // Get weather informaiton
                  var api = 'ebd4d312f85a230d5dc1db91e20c2ace';
                  var city = response.data.city;
                  var url = "http://api.openweathermap.org/data/2.5/weather?q={CITY}&APPID={APIKEY}&units=metric";
                  url = url.replace("{CITY}",city);
                  url = url.replace("{APIKEY}", api); 

                  that.$http.post(url,{dataType: 'jsonp'},{
              headers : {
                'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'
            }}).then((response) => {
                    console.log(response.data);
                  that.temperature = response.data.main.temp;
                  that.weather = response.data.weather[0]['description'];
                  that.iconURL = "http://openweathermap.org/img/w/" + response.data.weather[0]['icon'] + ".png";
                  }, (response) => {
                      // error callback
                  });

              }, (response) => {
                  console.log(response.data);            
              });            
          },

          changeDegree: function() {
            if(this.degree == "C"){
              this.degree = "F";
              this.temperature = Math.round((this.temperature*9/5 + 32)*100)/100;
            }else {
              this.degree = "C";
              this.temperature = Math.round(((this.temperature - 32)*5 /9)* 100)/100;
            }
          }
        }
      })

它在我的笔记本电脑上运行良好，但在移动设备上却不行。起初，我以为是因为 Codepen。在站点运行时可能会导致某些问题。但是，当我在我的网站上创建一个项目时，它也不起作用。

你能帮忙找出问题吗？谢谢，

Answer 1

您的代码似乎运行良好，除了在 codepen 上它给我错误XMLHttpRequest cannot load http://ipinfo.io/. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://s.codepen.io' is therefore not allowed access.。

您可以将您的域名放在headers 选项上以启用跨域，这里是示例：

this.$http.get('http://ipinfo.io', {
    'headers': {
        'Origin': 'http://yourdomain.com'
    }
})

查看示例：http://bozue.com/weather.html

我还注意到您将 vue.min.js 和 vue-resource.js 脚本的顺序错误可能会引发一些错误，vue.min.js 应该放在第一位。

Answer 2

我找到了解决方案。我现在在我的手机上工作。我相信我也会在其他浏览器上工作。问题是某些浏览器不识别操作“>”，所以我改了。

这是新代码：

getWeather: function(){
            var that = this;

            this.$http.get('http://ipinfo.io', {'headers': {
        'Origin': 'http://yourdomain.com'}
            }).then(function(response) {
                  console.log(response.data);
                  that.location = response.data.city + ", " + response.data.country;

                  // Get weather informaiton
                  var api = 'ebd4d312f85a230d5dc1db91e20c2ace';
                  var city = response.data.city;
                  var url = "https://crossorigin.me/http://api.openweathermap.org/data/2.5/weather?q={CITY}&APPID={APIKEY}&units=metric";
                  url = url.replace("{CITY}",city);
                  url = url.replace("{APIKEY}", api); 

                  that.$http.post(url,{dataType: 'jsonp'},{
              headers : {
                'Content-Type' : 'application/x-www-form-urlencoded; charset=UTF-8'
            }}).then(function(response) {
                    console.log(response.data);
                  that.temperature = response.data.main.temp;
                  that.weather = response.data.weather[0]['description'];
                  that.iconURL = "http://openweathermap.org/img/w/" + response.data.weather[0]['icon'] + ".png";
                  }).then(function(){
                      // error callback
                  });

              }).then(function(){
                  console.log(response.data);            
              });            
          },