我写了个 Chrome 插件，一键下载 PornHub 视频！

function Func() {
   return new Promise((resolve, reject) => {
      var a = document.querySelector("#player >script:nth-child(1)").innerHTML
      a = a.split('loadScriptUniqueId')[0]
      var c = a.match("flashvars_[0-9]{1,}")[0]
      eval(a)
      var d = eval(c)
      resolve(d)
   })
}
window.onload = () => {
   Func().then(res => {
      var videoType = []
      Object.keys(res).forEach((item) => {
         if (item.startsWith('quality_')) {
            var obj={
               key:item,
               val:res[item]
            }
            videoType.push(obj)
         }
      })
   for(var i = 0, len = videoType.length; i < len; i++){
   console.log(videoType[i].key,videoType[i].val)
}
   chrome.runtime.onMessage.addListener(function(request, sender, sendResponse){
      if(request.cmd == 'test')
      sendResponse(videoType);
      });
   })
}

popup.js

function sendMessageToContentScript(message, callback)
{
    chrome.tabs.query({active: true, currentWindow: true}, function(tabs)
    {
        chrome.tabs.sendMessage(tabs[0].id, message, function(response)
        {
            if(callback) callback(response);
        });
    });
}
sendMessageToContentScript({cmd:'test', value:'test'}, function(videoType)
{
    console.log(videoType);
   for(var i = 0, len = videoType.length; i < len; i++){
      console.log(videoType[i].key,videoType[i].val)
}
    var boxEl = document.getElementsByTagName('ul')[0]
    //var videoType = [{ key: 'qeqw', val: 'adasda' }, { key: 'qeqw', val: 'adasda' }, { key: 'qeqw', val: 'adasda' }]
    var videoStr = ''
    videoType.forEach(item => {
        videoStr += "<li>" + "<label>清晰度：" + "<span>" + item.key + "</span>" + "</label>" + "<a href=" + item.val + " target='_blank'>下载</a>" + "</li>"
    });
    boxEl.innerHTML = videoStr
});