Question

<!DOCTYPE html>
<html>
<head>
  <title>New page name</title>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
  <script>
  /*
  * Create cookie with name and value.
  * In your case the value will be a json array.
  */
  function createCookie(name, value, days) {
    var expires = '',
    date = new Date();
    if (days) {
      date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
      expires = '; expires=' + date.toGMTString();
    }
    document.cookie = name + '=' + value + expires + '; path=/';
  }
  /*
  * Read cookie by name.
  * In your case the return value will be a json array with list of pages saved.
  */
  function readCookie(name) {
    var nameEQ = name + '=',
    allCookies = document.cookie.split(';'),
    i,
    cookie;
    for (i = 0; i < allCookies.length; i += 1) {
      cookie = allCookies[i];
      while (cookie.charAt(0) === ' ') {
        cookie = cookie.substring(1, cookie.length);
      }
      if (cookie.indexOf(nameEQ) === 0) {
        return cookie.substring(nameEQ.length, cookie.length);
      }
    }
    return null;
  }
  /*
  * Erase cookie with name.
  * You can also erase/delete the cookie with name.
  */
  function eraseCookie(name) {
    createCookie(name, '', -1);
  }
var faves = new Array();
  $(function(){
    var url = window.location.href; // current page url
    $(document.body).on('click','#addTofav',function(e){
      e.preventDefault();
      var pageTitle = $(document).find("title").text();
      var fav = {'title':pageTitle,'url':url};
      faves.push(fav);
      var stringified = JSON.stringify(faves);
      createCookie('favespages', stringified);
      location.reload();
    });
    $(document.body).on('click','.remove',function(){
      var id = $(this).data('id');
      faves.splice(id,1);
      var stringified = JSON.stringify(faves);
      createCookie('favespages', stringified);
      location.reload();
    });

     var myfaves = JSON.parse(readCookie('favespages'));
     faves = myfaves;
    $.each(myfaves,function(index,value){
      var element = '<li class="'+index+'"><h4>'+value.title+'</h4> <a href="'+value.url+'">Open page</a>  '+
      '<a href="javascript:void(0);" class="remove" data-id="'+index+'">Remove me</a>';
      $('#appendfavs').append(element);
    });
  });
  </script>
</head>
<body>

  <a href="javascript:void(0);" id="addTofav">Add me to fav</a>

  <ul id="appendfavs">

  </ul>
</body>
</html>

我需要在我的房地产网站上的每个帖子上创建一个“收藏”或“保存”按钮，以便稍后保存所选帖子。它似乎是Ebay，Autotrader等网站上的一个非常标准的功能，我想使用cookie或本地存储来保持用户在该计算机上的收藏，这将允许用户将项目添加到他们的收藏夹并在他们返回时再次看到它们。无需帐户。

Answer 1

您可以轻松地使用javascript和jQuery执行此操作。使用下面的代码将用户所在的页面添加到收藏夹并将其保存在cookie中，然后获取保存为收藏夹的页面列表。

我已经为您创建了一个完整的文件，您可以在我创建adding page，list pages，remove page的功能的文件中查看它。

<!DOCTYPE html>
<html>
<head>
  <title>New page name</title>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.2/jquery.min.js"></script>
  <script>
  /*
  * Create cookie with name and value.
  * In your case the value will be a json array.
  */
  function createCookie(name, value, days) {
    var expires = '',
    date = new Date();
    if (days) {
      date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
      expires = '; expires=' + date.toGMTString();
    }
    document.cookie = name + '=' + value + expires + '; path=/';
  }
  /*
  * Read cookie by name.
  * In your case the return value will be a json array with list of pages saved.
  */
  function readCookie(name) {
    var nameEQ = name + '=',
    allCookies = document.cookie.split(';'),
    i,
    cookie;
    for (i = 0; i < allCookies.length; i += 1) {
      cookie = allCookies[i];
      while (cookie.charAt(0) === ' ') {
        cookie = cookie.substring(1, cookie.length);
      }
      if (cookie.indexOf(nameEQ) === 0) {
        return cookie.substring(nameEQ.length, cookie.length);
      }
    }
    return null;
  }
  /*
  * Erase cookie with name.
  * You can also erase/delete the cookie with name.
  */
  function eraseCookie(name) {
    createCookie(name, '', -1);
  }
var faves = new Array();
  $(function(){
    var url = window.location.href; // current page url
    $(document.body).on('click','#addTofav',function(e){
      e.preventDefault();
      var pageTitle = $(document).find("title").text();
      var fav = {'title':pageTitle,'url':url};
      faves.push(fav);
      var stringified = JSON.stringify(faves);
      createCookie('favespages', stringified);
      location.reload();
    });
    $(document.body).on('click','.remove',function(){
      var id = $(this).data('id');
      faves.splice(id,1);
      var stringified = JSON.stringify(faves);
      createCookie('favespages', stringified);
      location.reload();
    });

     var myfaves = JSON.parse(readCookie('favespages'));
     faves = myfaves;
    $.each(myfaves,function(index,value){
      var element = '<li class="'+index+'"><h4>'+value.title+'</h4> <a href="'+value.url+'">Open page</a>  '+
      '<a href="javascript:void(0);" class="remove" data-id="'+index+'">Remove me</a>';
      $('#appendfavs').append(element);
    });
  });
  </script>
</head>
<body>

  <a href="javascript:void(0);" id="addTofav">Add me to fav</a>

  <ul id="appendfavs">

  </ul>
</body>
</html>

该页面看起来很相似：

createCookie此函数将在用户浏览器中使用指定名称创建新cookie，在您的情况下，名称为：favespages，您可以使用您想要的任何名称。它有3个参数，现在我使用2个参数：name和value，name用于cookie的名称，value用于我们存储所有的页面json对象我们的收藏页面。 days参数用于指定您正在创建的特定cookie的到期时间。

readCookie此函数用于从用户的浏览器中获取存储fav页面的cookie。如果用户在favespages cookie中没有任何页面，那么它将为空。从cookie中获取字符串后，我需要将该字符串转换回json对象以打印页面列表。所以这样做我正在使用JSON.parse(readCookie('favespages'));

为了更熟悉这个概念，你必须使用代码，看看当你在这里改变某些东西时会发生什么。

根据Cookie或本地存储将收藏夹列表中的收藏页面保存

1 个答案: