javascript - What does ui.draggable.draggable means? -

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i new javascript , have stated learn javascript. came across piece of code .i know use , meaning of

ui.draggable.dragabble in code shown below

    drop:function(e,ui){                                 var drag = ui.draggable;     $(this).droppable('option', 'accept', drag);     drag.css({'top':$(this).css('top'),'left':$(this).css('left')});     drag.draggable('option', 'revert', function(){return false});     var drop_index=$(this).attr("id").split('_')[1];

i know sites learn drag , drop in javascript,in better way.

any appreciated in advance.

"ui.draggable" refers object containing elements being dragged on page.

the function

drop: function(e, ui) { }

is executed when draggable object dropped on droppable element. can refer jquery-ui api documentation here: http://api.jqueryui.com/category/interactions/ drag , drop functionalities. point , apt. check demos. start demos better grasp of it.

for drag , drop:

  1. html5 has attributes 'draggable="true"' can add elements. can attach events handledrag, handledrop etc required functionality. check here: https://www.html5rocks.com/en/tutorials/dnd/basics/
  2. jqueryui has interactive widgets can added page elements. pretty simple grasp. refer above link mentioned exploring. can use touch-punch library http://touchpunch.furf.com/ make jqueryui work on mobile devices well.
  3. you can write own pure javascript drag , drop function. found 1 here: https://github.com/lukasolson/drag-n-drop-js .

i know these 3 ways drag-and-drop. there might others well.


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