javascript - 如何在外部div中包含可调整大小的div？

我有一个可调整大小且可拖动的框（灰色）。可以通过从角落拉伸盒子来调整大小。

我想确保在任何时候都不能将内部的灰色框拖动到外部的黄色框之外。内部灰色框的边缘应最大程度地接触外部黄色框的边缘。

我的代码在这里。
http://jsfiddle.net/akashdmukherjee/sa44ks9u/4/

HTML：

  <div id="outer" style="background-color: yellow; width: 600px; height: 400px; margin-left: 40px; margin-top: 50px;">


        <div class="draggable_div rot">
            <div class="rotatable">
                <div id="inner" class="resizable" style="background-color: #3C3C3C; width: 300px; height: 300px;">
                </div>
            </div>
        </div>

  </div>

  <div id="x_and_y_of_inner">Left: , Right: </div>

JS：

    $('.draggable_div').draggable();


    $( ".draggable_div" ).draggable({
      drag: function( event, ui ) {

        var left_most_cordinates = $("#outer").offset().left;
        var top_most_cordinates = $("#outer").offset().top;

        $("#x_and_y_of_inner").text( "Left: " + left_most_cordinates + " Top: " + top_most_cordinates );

        ui.position.left = Math.min( left_most_cordinates, ui.position.left );
        ui.position.top = Math.min( top_most_cordinates, ui.position.top );
      }
    });

    $('.resizable').resizable({
        aspectRatio: true,
        handles: 'ne, se, sw, nw'
    });



    $(document).on('mouseover', '.rot', function(){
        var tc = $(this);
        tc.rotatable({
            handle:tc.children('.rotate.left, .rotate.right')
        });
        return true;
    });

CSS：

.draggable_div
{
    position: relative;
    display: -moz-inline-stack;
    display: inline-block;
    vertical-align: top;
    zoom: 1;
    *display: inline;

    cursor: hand;
    cursor: pointer;
}

.resizable
{
    width: 50%;
    border: 1px solid #bb0000;
}
.resizable img
{
    width: 100%;
}

.ui-resizable-handle
{
    background: #f5dc58;
    border: 1px solid #FFF;
    width: 9px;
    height: 9px;

    z-index: 2;
}
.ui-resizable-se
{
    right: -5px;
    bottom: -5px;
}

.ui-rotatable-handle
{
    background: #f5dc58;
    border: 1px solid #FFF;
    border-radius: 5px;
    -moz-border-radius: 5px;
    -o-border-radius: 5px;
    -webkit-border-radius: 5px;
    cursor: pointer;

    height:        10px;
    left:          50%;
    margin:        0 0 0 -5px;
    position:      absolute;
    top:           -5px;
    width:         10px;
}
.ui-rotatable-handle.ui-draggable-dragging
{
    visibility:  hidden;
}

最佳答案

如下使用containment的resizable属性，使其可包含在parent中

$('.resizable').resizable({
    aspectRatio: true,
    containment:'#outer', //outer is the id of its root parent
    handles: 'ne, se, sw, nw'
});

DEMO

关于javascript - 如何在外部div中包含可调整大小的div？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/34604114/