title: Chrome extension - function in javascript not working properly
body: <p>This is my first question on stackoverflow. I am trying to write code for a chrome extension that helps in shortlisting. The idea is to have a folder named Shortlists in bookmark bar, and a few subfolders by name "www.stackoverflow.com" or "www.amazon.com" or "www.bbcnews.com" etc. When I find something interesting but want to read later, I may click on "shortlist extension icon" in the browser bar, and that will automatically create bookmark (and parent folder if the need be). I have no prior experience in javascript programming. I have written the following code - bck.js, which is invoked by manifest.json </p>
  
  <pre><code>    var foldercheck = false;
  
  chrome.browserAction.onClicked.addListener(function(tab){
      var taburl  = tab.url
      var urlsplit  = taburl.split("://")
      var actual_url 
      if (urlsplit.length == 2) 
      {
          actual_url = urlsplit[1]
      }
      else 
      {
          actual_url = urlsplit[0]
      }
      var website = actual_url.split("/") 
      website = website[0] 
      console.log ('taburl: '+ taburl + ' actual_url: '+ actual_url+' website:  ' + website )
      createShortList(website,taburl)
      });
  
      function createShortList(website,taburl) {
      console.log(website + '    ' + taburl)
      chrome.bookmarks.getTree(function(bookmarks){
      chrome.bookmarks.search("Shortlists", function(slist){  
          console.log ("slist")
          if (slist[0]){
          console.log ("slistw2")
          chrome.bookmarks.getChildren(slist[0].id,function(slistchildren){
          slistchildren.forEach(function (slistchild){
          if (slistchild.title == website)
          {
              chrome.bookmarks.create({'parentId' : slistchild.id, 'title' : taburl , 'url' : taburl})
              console.log('added in Shortlists1, '+slistchild.id +' ')
              foldercheck = true
          }
          })})}
          if (foldercheck == false)       
          {
              chrome.bookmarks.create({'parentId' : slist[0].id, 'title' :  website}, function(folder) {
                  chrome.bookmarks.create({'parentId' : folder.id, 'title' : taburl, 'url' : taburl})
                  console.log('added in Shortlists2, '+folder.id +' ')
                  foldercheck = true
              })
              foldercheck = true
          }
          })
      })
  
      if (foldercheck == false) {
      chrome.bookmarks.create({'parentId': "1", 'title': 'Shortlists'}, function(shortlist) {
      chrome.bookmarks.create({'parentId' : shortlist.id, 'title' :  website}, function(folder2)
      {chrome.bookmarks.create({'parentId' : folder2.id, 'title' : taburl, 'url' : taburl});
      console.log('added in Shortlists3, '+folder2.id +' ')
      ;})})
      foldercheck = true  }
      }
  </code></pre>
  
  <p>With this I am able to create bookmarks, but there are bugs like, the creating multiple shortlists, multiple shortlist folders in bookmark bar or multiple urls in subfolders. I am unable to decode a pattern in the bug. Please help me resolve this. Thanks in advance. Though I dont think there is a problem in manifest.json, here is the file for reference. </p>
  
  <pre><code>{
    "name": "Shortlist",
    "manifest_version" : 2,
    "version" : "1.0",
    "description" : "To ShortList",
    "background" : {"scripts" : ["bck.js"], "persistent" : false},
    "browser_action": {"default_icon" : "icon.png"},
    "permissions": [
            "activeTab", "bookmarks"
          ]
  }
  </code></pre>