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背景选项卡上的页面未正确加载(Page on background tab not loading properly)

 我正在使用带有jQuery的Polymer 1.0，并创建了一个小的单页应用程序。 但是，当我“在新选项卡中打开链接”时，页面不会加载。 更具体地说，它以模板形式加载并触发ajax请求以获取数据，但不会将任何数据填充到模板中。 例如，简化版本：  
$(document).ready(function(){
    url = '/ajax/get_data';
    $.post(url, '', function(data) {
      if (data.data.id !== undefined & data.data.id > 0) {
        $('.gt-info-location').text(data.data.name);
        $('.gt-city-population').text(data.population);
        $('.gt-city-timezone').text(data.data.timezone);
        $('.gt-city-county').text(data.data.county);
        $('google-map')[0].latitude = data.data.latitude;
        $('google-map')[0].longitude = data.data.longitude;
        $('#location-frontpage').css('background',"url('pictures/"+data.data.image_file+"') center / cover");
        $('#location-back').css('background',"url('pictures/"+data.data.image_file+"') center / cover");
      }
    });
});
 
 我知道$.post正在发生并从Web请求日志返回正确的数据，但是.text()或.css()函数都没有对页面进行任何更改。 并且，是的，在打开的选项卡中加载相同的页面工作正常。 

I am using Polymer 1.0 with jQuery and have created a small single page app. When I "Open link in new tab", however, the page doesn't load. More specifically, it loads in template form and fires the ajax requests to get the data, but none of that data gets populated into the template. For example, a simplified version: 
$(document).ready(function(){
    url = '/ajax/get_data';
    $.post(url, '', function(data) {
      if (data.data.id !== undefined & data.data.id > 0) {
        $('.gt-info-location').text(data.data.name);
        $('.gt-city-population').text(data.population);
        $('.gt-city-timezone').text(data.data.timezone);
        $('.gt-city-county').text(data.data.county);
        $('google-map')[0].latitude = data.data.latitude;
        $('google-map')[0].longitude = data.data.longitude;
        $('#location-frontpage').css('background',"url('pictures/"+data.data.image_file+"') center / cover");
        $('#location-back').css('background',"url('pictures/"+data.data.image_file+"') center / cover");
      }
    });
});
 
I know the $.post is happening and returning the correct data from the web request log, but none of the .text() or .css() functions are making any changes to the page. And, yes, loading the same page in an open tab works fine.

原文：https://stackoverflow.com/questions/36289923

更新时间：2023-12-18 11:12

最满意答案

 这是一行：  
return DataCenterEnum.values()[new Random().nextInt(3) + 1)];
 
 
 对于那些需要更严格控制代码的人来说，这是一个更安全的版本，它不依赖于枚举实例的顺序：  
return new DataCenterEnum[]{DC1, DC2, DC3}[new Random().nextInt(3)];

Here's the one line: 
return DataCenterEnum.values()[new Random().nextInt(3) + 1)];
 
 
For those who require tighter control on their code, here's a safer version, which does not depend on the order of the enum instances: 
return new DataCenterEnum[]{DC1, DC2, DC3}[new Random().nextInt(3)];

背景选项卡上的页面未正确加载(Page on background tab not loading properly)

最满意答案

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