如何从HTML表单中获取键/值数据集

我只是在寻找一种方法来获取一个

该对象应该是：

{
  firstname: "John",
  surname: "doe",
  email: "",
  gender: ""
}

编辑：上面只是一个示例，它不仅适用于，还适用于其他标签（例如，</code>等...甚至应该支持<code><input type="file"></code>）。</p> </div> <div class="scisco-sq-comments"> <apcomments id="comments-465698" class="have-comments"></apcomments> </div> </div> <div class="scisco-sq-vote"><div id="vote_465698" class="ap-vote net-vote" ap-vote="{"post_id":465698,"active":"","net":0,"__nonce":"9f3006cf87"}"><a class="apicon-thumb-up ap-tip vote-up" href="#" title="投票支持这个帖子" ap="vote_up"></a><span class="net-vote-count" data-view="ap-net-vote" itemprop="upvoteCount" ap="votes_net">0</span><a data-tipposition="bottom center" class="apicon-thumb-down ap-tip vote-down" href="#" title="对此文章投反对票" ap="vote_down"></a></div></div> </div> </div> <!-- --><!-- <span class="to-yw"><a target="_blank" rel="nofollow" href="--><!--">跳转到原文</a></span>--> </div> <apanswersw style="display:none"> <div id="ap-answers-c"> <div class="ap-sorting-tab clearfix"> <h3 class="ap-answers-label ap-pull-left" ap="answers_count_t"> <span itemprop="answerCount">0</span> 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