jQuery实现元素拖拽缩放关闭功能jqueryDrage

 $(document).mousemove(function(e) {
 if (!!this.move) {
 var posix = !document.move_target ? {'x': 0, 'y': 0} : document.move_target.posix,
 callback = document.call_down || function() {
 $(this.move_target).css({
 'top': e.pageY - posix.y,
 'left': e.pageX - posix.x
 });
 };
 callback.call(this, e, posix);
 }
 }).mouseup(function(e) {
 if (!!this.move) {
 var callback = document.call_up || function(){};
 callback.call(this, e);
 $.extend(this, {
 'move': false,
 'move_target': null,
 'call_down': false,
 'call_up': false
 });
 }
 });

 $('.box').mousedown(function(e) {
 var offset = $(this).offset();
 this.posix = {'x': e.pageX - offset.left, 'y': e.pageY - offset.top};
 $.extend(document, {'move': true, 'move_target': this});
 }).on("click",".closeBox",function(){
 $(this).parent().hide();
 }).on('mousedown', '.coor', function(e) {
 var _t = $(this).parent();
 var posix = {
 'w': _t.width(),
 'h': _t.height(),
 'x': e.pageX,
 'y': e.pageY
 };
 $.extend(document, {'move': true, 'call_down': function(e) {
 _t.css({
 'width': Math.max(30, e.pageX - posix.x + posix.w),
 'height': Math.max(30, e.pageY - posix.y + posix.h)
 });
 }});
 return false;
 });