Question

我有类似下面的内容：

<div id="left">
    left
</div>
<div id="right">
    right
</div>

使用.css属性：

#left {
    width: 60%;
    float: left
    min-height: ###
    max-height: 1000px;
}
#right {
    width: 40%;
    float: right;
    min-height: ###
    max-height: 1000px;
}

请注意两个### CSS <div>属性的min-height。我想要像下面这样的东西（一些伪JS）：

var leftheight = document.getElementById(left);
var rightheight = document.getElementById(right);
if (leftheight.currentHeight > rightheight.currentHeight) {
    rightheight.style.min-height = leftheight.currentHeight;
} else if (rightheight.currentHeight > leftheight.currentHeight) {
    leftheight.style.min-height = rightheight.currentHeight;
}

基本上我想要：

if (current height of left > current height of right) {
    min-height of right = current height of left
} else if (current height of right > current height of left) {
    min-height of left = current height of right
} 
//ie. both left and right have the same min-heights, whichever is larger

我的Javascript错了，这是我刚刚学到的东西。有没有一种方法可以用来获得我想要的结果？

Answer 1

你可以这样做：

if (leftheight.currentHeight > rightheight.currentHeight) {
    rightheight.style.minHeight = leftheight.currentHeight;
} else if (rightheight.currentHeight > leftheight.currentHeight) {
    leftheight.style.minHeight = rightheight.currentHeight;
}

实际上minHeight不是min-height。

Answer 2

使用jquery

 $(function(){ //ready function to make sure document is ready
 var $leftdiv=$('#left'),
     $rightdiv=$('#right'),
     $leftHeight=$('#left').height(),
     $rightHeight=$('#right').height();
   if ( $leftHeight > $rightHeight) {
      $rightdiv.css('min-height':$leftHeight + "px");
   } else if ( $rightHeight > $leftHeight) {
      $leftdiv.css('min-height':$rightHeight + "px");
   } 
 });

Answer 3

此处不需要javascript，您可以通过添加overflow: hidden的容器并向left和right div添加正边距和负边距来实现此目的：

<div id="container">
    <div id="left">left</div>
    <div id="right">right<br /><br /><br /><br />Foobar</div>
</div>

#container {
    width: 75%; /* amend this as required */
    overflow: hidden;
}
#left {
    width: 60%;
    float: left;
    max-height: 1000px;
    background-color: #C00;
    padding-bottom: 1000px;
    margin-bottom: -1000px;
}
#right {
    width: 40%;
    float: right;
    max-height: 1000px;
    background-color: #0C0;
    padding-bottom: 1000px;
    margin-bottom: -1000px;
}

Example fiddle

通常，javascript应永远仅用于布局目的。如果某人关闭了javascript，您的网页会发生什么？

Answer 4

你可以使用jquery

var leftheight = $('#left').height();
var rightheight =$('#right').height();


if (leftheight > rightheight) {
    $('#right').css('min-height',leftheight+"px")
 } 
else if (rightheight > leftheight) {
    $('#left').css('min-height',rightheight + "px")
}

用JS改变.css？使用变量设置动态.css属性

4 个答案: