jquery | textarea draggable jquery

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textarea draggable jquery

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<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>

<style>
form{width: 435px;}
</style>

</head>
<body>

<form>
<fieldset>
<legend>Drag&DragOff</legend>
<button type='button' class='draq1'>Drag</button>
<button type='button' class='draq2'>Drag off</button>
<textarea rows='10' cols="50"></textarea>
</fieldset>
</form>

<script>

$(document).ready(function () {

$(".draq1").click(function () {

$("form").drags();

});

$(".draq2").click(function () {

$("form").dragsOff();

});

// drag
(function($) {
$.fn.drags = function(opt) {

opt = $.extend({handle:"",cursor:"move"}, opt);

if(opt.handle === "") {
var $el = this;
} else {
var $el = this.find(opt.handle);
}

return $el.css('cursor', opt.cursor).on("mousedown", function(e) {
if(opt.handle === "") {
var $drag = $(this).addClass('draggable');
} else {
var $drag = $(this).addClass('active-handle').parent().addClass('draggable');
}
var z_idx = $drag.css('z-index'),
drg_h = $drag.outerHeight(),
drg_w = $drag.outerWidth(),
pos_y = $drag.offset().top + drg_h - e.pageY,
pos_x = $drag.offset().left + drg_w - e.pageX;
$drag.css('z-index', 1000).parents().on("mousemove", function(e) {
$('.draggable').offset({
top:e.pageY + pos_y - drg_h,
left:e.pageX + pos_x - drg_w
}).on("mouseup", function() {
$(this).removeClass('draggable').css('z-index', z_idx);
});
});
e.preventDefault(); // disable selection
}).on("mouseup", function() {
if(opt.handle === "") {
$(this).removeClass('draggable');
} else {
$(this).removeClass('active-handle').parent().removeClass('draggable');
}
});

}
})(jQuery);

// Drag off
(function ($) {
$.fn.dragsOff = function (opt) {
opt = $.extend({ handle: "", cursor: "default" }, opt);

if (opt.handle === "") {
var $el = this;
$(this).removeClass('draggable');
} else {
var $el = this.find(opt.handle);
$(this).removeClass('active-handle')
.parent()
.removeClass('draggable');
}
return $el.css('cursor', "default")
.off("mousedown")
.off("mouseup")
.off("mousemove");
}

})(jQuery);

});

</script>

</body>
</html>