John Davidson

$(".imageblockbtn").click(function () {

    var langid = jQuery(this).attr("id");



    $(

      `#dynamic${langid}`

    ).append(`<div class="col-12 form-group qwer" id="imageblock">

                                                <label for="imageblock">Image Block</label>

                                                <input class="imageblock" type="file" accept="image/*" name="data[${langid}][imageblock${k}]"><span class="up"></span><span

                                                class="down"></span>

                                                <button type="button" class="btn remove-dyna"><i class="material-icons" style="font-size:18px;color:red">remove_circle</i></button>



                                                <div class="dropdown">

                                                        <a class="dropbtn">Duplicate</a>

                                                        <div class="dropdown-content image_dd">



                                                        <li id="1"><a href="javascript:void(0)">English</a> </li>

                                                        <li id="3"><a href="javascript:void(0)">Chineese</a></li>

                                                        <li id="9"><a href="javascript:void(0)">German</a></li>

                                                        <li id="10"><a href="javascript:void(0)">Italian</a></li>

                                                        <li id="4"><a href="javascript:void(0)">Korean</a></li>

                                                        <li id="5"><a href="javascript:void(0)">Japanese</a></li>

                                                        <li id="6"><a href="javascript:void(0)">Spanish</a></li>

                                                        <li id="11"><a href="javascript:void(0)">Russian</a></li>

                                                        <li id="7"><a href="javascript:void(0)">Ukranian</a></li>

                                                        <li id="8"><a href="javascript:void(0)">French</a></li>



                                            </div>

                                            </div>



                                            </div>`);

    ++k;



    $(".image_dd li").each(function (index, li) {

      var lid = $(li).attr("id");

      // console.log($(li).parents(".qwer"));

      $(li).unbind("click");

      $(li).on("click", function () {

        var clone = $(li).parents(".qwer").clone(true);



        clone

          .children("h1")

          .children("input")

          .attr("name", `data[${lid}][imageblock${k}]`);

        clone.insertAfter(`#dynamic${lid}`);

        ++k;

        alert("Duplicated");

      });

    });

  });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

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My Answer:
text:

javascript
var clonedInput = $('input[type="text"]').clone();


This code will clone the input element with type="text" using jQuery.