如何使前置元素可拖动

Question

I have a code that adds elements upon the click of a button.

 $(document).ready(function(){ $("#add_txt").click(function(){ $("body").prepend('<input class="style_txt">'); }); }); //However when I add... $( function() { $( ".style_txt" ).draggable(); } ); 

 <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://code.jquery.com/ui/1.12.0/jquery-ui.js"></script> <button class="btn" id="add_txt">Add Text</button> 

The element can not be dragged? Why is this?

Answer 1

you can't do it with input element, wrap it inside span

 $(document).ready(function() { $("#add_txt").click(function() { $("body").prepend('<span><input class="style_txt"></span>'); $(".style_txt").parent().draggable(); }); }); 

 span { padding: 5px; border: 1px solid #eee; cursor: move; } 

 <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://code.jquery.com/ui/1.12.0/jquery-ui.js"></script> <button class="btn" id="add_txt">Add Text</button> 

Answer 2

You could do it like this:

 $(document).ready(function() { $("#add_txt").click(function() { $("body").prepend('<div class="style_text"><input /></div>'); $(".style_text").draggable({ start: function(event, ui) { $(this).data("preventBehaviour", true); } }); $(".style_text :input") .on("mousedown", function(e) { var mdown = document.createEvent("MouseEvents"); mdown.initMouseEvent( "mousedown", true, true, window, 0, e.screenX, e.screenY, e.clientX, e.clientY, true, false, false, true, 0, null ); $(this).closest(".style_text")[0].dispatchEvent(mdown); }) .on("click", function(e) { var $draggable = $(this).closest(".style_text"); if ($draggable.data("preventBehaviour")) { e.preventDefault(); $draggable.data("preventBehaviour", false); } }); }); }); 

 <script src="https://code.jquery.com/jquery-1.12.4.js"></script> <script src="https://code.jquery.com/ui/1.12.0/jquery-ui.js"></script> <button class="btn" id="add_txt">Add Text</button> 

It's a rather complex answer, but it works. Note: I found this workaround in another answer .