使用javascript根据孩子的绝对div高度更改父div高度

问题描述：

我正在研究这样的情况的项目.

Iam working on project where I cam across the situation like this.

我需要我的父div根据孩子的div拉伸其高度.父级高度固定为400px；

I need my parent div stretch its height depending on the child div. The parent height is fixed for 400px;

#parent-div{
min-height:400px;
width:250px;
background-color:#333;
position:relative;
}


#child-div{
position:absolute;
height:auto;
top: 0%;

}

我需要将我的孩子div定位为absolute.

I need my child div to be absolute positioned.

子div由表内容组成，其中高度可能根据内容而增加.我需要我的父母div相应地伸展.因此，我需要一个解决方案，在该解决方案中，将计算子级的渲染高度，并使父div的拉伸度超过子级.

The child div consists of table contents where the height may increase depending on the contents. I need my parent div stretch accordingly. So i need a asolution where the rendered height of child is calculated and make the parent div stretch extra than child.

If rendered height of child div is 400px, I need my parent div to be 450px;

我该怎么做?

答

$(function(){
    var parent= $('#parent');
    var parentOffset = parent.offset();
    var bottom = 0; 
    parent.find('*').each(function() {
        var elem = $(this);
        var elemOffset = elem.offset();
        var elemBottom = elemOffset.top + elem.outerHeight(true) - parentOffset.top;
        if (elemBottom > bottom) {
            bottom = elemBottom;
        }
    });

    parent.css('min-height', bottom);

});

使用javascript根据孩子的绝对div高度更改父div高度

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