Question

我试图获得桌面和移动设备的页面速度分数，然后将它们传递给#pgscore＆amp;＆amp; #pgscorem输入。

问题是在脚本结束时我总是得到var device ==＆＃39; mobile＆＃39;。它看起来像跳过循环。知道我怎么能解决它？

for (var r = 0; r < 2; r++) {
var API_KEY = 'mykey';
var device = '';

switch (r) {
    case 0: device='desktop'; break; 
    case 1: device='mobile'; break;
};  
alert(device);
var URL_TO_GET_RESULTS_FOR = 'http://www.stackoverflow.com' + '&strategy=' + device;

var API_URL = 'https://www.googleapis.com/pagespeedonline/v1/runPagespeed?';
var CHART_API_URL = 'http://chart.apis.google.com/chart?';


var callbacks = {}


function runPagespeed() {
  var s = document.createElement('script');
  s.type = 'text/javascript';
  s.async = true;
  var query = [
    'url=' + URL_TO_GET_RESULTS_FOR,
    'callback=runPagespeedCallbacks',
    'key=' + API_KEY,
  ].join('&');
  s.src = API_URL + query;
  document.head.insertBefore(s, null);
}


function runPagespeedCallbacks(result) {
  if (result.error) {
    var errors = result.error.errors;
    for (var i = 0, len = errors.length; i < len; ++i) {
      if (errors[i].reason == 'badRequest' && API_KEY == 'yourAPIKey') {
        alert('Please specify your Google API key in the API_KEY variable.');
      } else {

        alert(errors[i].message);
      }
    }
    return;
  }

  for (var fn in callbacks) {
    var f = callbacks[fn];
    if (typeof f == 'function') {
      callbacks[fn](result);
    }
  }
}

setTimeout(runPagespeed, 0);


callbacks.displayPageSpeedScore = function(result) {
  var score = result.score;

功能计数在那里。问题在这里......为什么我无法获得可变设备==＆＃39;桌面＆＃39;首先，然后在第二个循环＆＃39;移动＆＃39;？我总是能够移动＆＃39;。

switch (device) {
        case 'desktop': $('#pgscore').val(score); break; 
        case 'mobile': $('#pgscorem').val(score); break;
    };


 };



};

Answer 1

由于我只需要得分，我使用的是php

$jsonurl="https://www.googleapis.com/pagespeedonline/v1/runPagespeed?url=$url&locale=pl_pl&$key"; 
  $json = file_get_contents($jsonurl);  
  $json_output = json_decode($json, true); 
  /* print_r(array_values($json_output));*/
  echo $json_output['score'];

如何使用PageSpeed获得移动和桌面分数

1 个答案: