jquery:将一组元素粘贴到另一组元素/合并元素上

时间:2010-07-31 22:25:08

标签: javascript jquery

我有两组元素:

<div class='container container1'>
    <div class='colors'>
        <div class='blue'></div>
        <div class='red'></div>
    </div>
    <div class='drinks'>
        <div class='soda'>coke</div>
        <div class='juice'></div>
    </div>
</div>    

<div class='container container2'>
    <div class='cars'>
        <div class='sedans'></div>
        <div class='vans'></div>
    </div>
    <div class='drinks'>
        <div class='soda'>mountain dew</div>
        <div class='coffee'></div>
    </div>
</div>        

我想将container1粘贴到container2上,以便覆盖任何替换,并且将每个容器的任何唯一内容单独放在一起并放在一起。

结果应为:

<div class='container container-result'>
    <div class='colors'>
        <div class='blue'></div>
        <div class='red'></div>
    </div>
    <div class='cars'>
        <div class='sedans'></div>
        <div class='vans'></div>
    </div>
    <div class='drinks'>
        <div class='soda'>coke</div>
        <div class='juice'></div>
        <div class='coffee'></div>
    </div>
</div>        

元素可以具有任意层次/深度。最好的方法是什么?

提前致谢。

4 个答案:

答案 0 :(得分:1)

由于您的问题被标记为jQuery,因此使用该库的答案稍微短一些:

function copy(from, to) {
    from.children().each(function() {
      var match = to.children("." + this.className.split(' ').join('.'));
        if(match.length) {
            if(match.children().length == 0) {
                match.replaceWith(this);
            } else {
                copy($(this), match);
            }
        } else {
            to.append(this);
        }
    }).end().remove();
    from.remove();
}

然后你就这样称呼它:

copy($(".container1"), $(".container2"));

You can give it a try here,结果是:

<div class="container container2">
  <div class="cars">
    <div class="sedans"></div>
    <div class="vans"></div>
  </div>
  <div class="drinks">
    <div class="soda">coke</div>
    <div class="coffee"></div>
    <div class="juice"></div></div>
  <div class="colors">
    <div class="blue"></div>
    <div class="red"></div>
  </div>
</div>

请注意,如果您想要替换,那么类名仍为container2,只需添加此名称即可在copy()调用后切换该类:

$(".container2").toggleClass("container2 container-result");

匹配基于元素包含的所有类,因此如果元素具有class="car blue"并且存在相应的class="blue car",则会选择要覆盖的那个。

这不是最有效的路线,因为你在每次迭代时都会在子项上启动选择器引擎,但除非你正在做很多元素,否则它应该非常快。 / p>

答案 1 :(得分:0)

关于独特的合并,我无法帮助你,但如果你的应用程序碰巧是在PHP中,那么你可以使用php的array_merge函数在输出HTML之前合并它们。

ReplaceWith是一个很好的jquery函数来代替“粘贴”,它可能会帮助你解决一半的问题。

答案 2 :(得分:0)

这看起来像你想要的那样:

  <div class='container container1'>
      <div class='colors'>
          <div class='blue'></div>
          <div class='red'></div>
      </div>
      <div class='drinks'>
          <div class='soda'>coke</div>
          <div class='juice'></div>
      </div>
  </div>    

  <div class='container container2'>
      <div class='cars'>
          <div class='sedans'></div>
          <div class='vans'></div>
      </div>
      <div class='drinks'>
          <div class='soda'>mountain dew</div>
          <div class='coffee'></div>
      </div>
  </div>        

  <div class='container container-result'>
  </div>

  <script src="http://ajax.microsoft.com/ajax/jquery/jquery-1.4.2.min.js" type="text/javascript"></script>
  <script type="text/javascript">

    function getContainerArray(containers, level) {
      level = level || 0;
      var result = [];
      for (var i=0; i<containers.length; ++i) {
        var el = containers.eq(i);
        var obj = { "class": el.attr("class") };
        if (level == 0) {
          obj.items = getContainerArray(el.children("div"), 1);
        } else {
          obj.text = el.text();
        }
        result.push(obj);
      }
      return result;
    }

    function mergeContainers(containerArray) {
      var result = [];

      function indexOfClass(name) {
        for (var i = 0; i < result.length; ++i) {
          if (result[i]["class"] == name) {
            return i;
          }
        }
        return -1;
      }

      for (var i = 0; i < containerArray.length; ++i) {
        var obj = containerArray[i];
        var name = obj["class"];
        var index = indexOfClass(name);
        if (index < 0) {
          result.push(obj);
        } else if (obj.items != null) {
          result[index].items = mergeContainers(new Array().concat(result[index].items, obj.items));
        }
      }

      return result;
    }

    function getHtml(objArray) {
      var result = [];
      for (var i = 0; i < objArray.length; ++i) {
        var obj = objArray[i];
        result.push("<div class=\"", obj["class"], "\">");
        if (obj.text != null && obj.text != "") {
          result.push(obj.text);
        }
        if (obj.items != null) {
          result.push(getHtml(obj.items));
        }
        result.push("</div>");
      }
      return result.join("");
    }

    var html = getHtml(mergeContainers(getContainerArray($("div.container1>div,div.container2>div"))));
    $("div.container-result").append(html);
  </script>

答案 3 :(得分:0)

这个答案:

  1. 完全符合您的要求。
  2. 如果div class container-result已经存在,则处理重复的合并。
  3. 合并任意数量的容器div。
  4. 使用jQuery并且比其他一些解决方案更有效。
  5. See it in action at jsfiddle.net.

    /*--- Get all "container" divs but exclude any "container-result" divs.
    */
    var zContainers = $("div.container").not ("div.container-result");
    if (zContainers  &&  zContainers.length)
    {
        //--- Get or create the results div.
        var zResultDiv  = $("div.container-result");
        if (!zResultDiv  ||  !zResultDiv.length)
        {
            zResultDiv  = zContainers.parent ().append ("<div class='container container-result'></div>");
            zResultDiv  = $("div.container-result");
        }
    
        //--- Move the container's contents to the master container, preserving order.
        zContainers.each (function () {$(this).children ().appendTo (zResultDiv);} )
    
        //--- Kill the old container(s).
        zContainers.remove ();
    
        RecursivelyMergeDivsByClass (zResultDiv);
    }
    
    function RecursivelyMergeDivsByClass (jNode)
    {
        /*--- Get a list of the direct-child div's class names.
            Sort and winny out a list of duplicates.
        */
        var zDirectChildDivs    = jNode.find ("> div");
        var aClassList          = zDirectChildDivs.map (function () {return this.className;} ).get ();
        aClassList.sort ().unshift (0);
    
        for (var J = aClassList.length-1;  J > 0;  J--)
            if (aClassList[J] != aClassList[J-1])   aClassList.splice (J, 1); // Delete items without duplicates.
    
        aClassList.splice (0, 1);
    
        /*--- For any duplicates, copy the contents into the first instance, preserving order.
            For exact duplicate nodes, the first (oldest) version is kept and the remaining are discarded.
        */
        for (var J = aClassList.length-1;  J >= 0;  J--)
        {
            var zDupClasses     = zDirectChildDivs.filter ("." + aClassList[J]);
    
            var zFirstDiv       = zDupClasses.first ();
            zDupClasses         = zDupClasses.not (zFirstDiv);
    
            zDupClasses.each (function () {$(this).children ().appendTo (zFirstDiv);} )
            zDupClasses.remove ();
    
            RecursivelyMergeDivsByClass (zFirstDiv)
        }
    }