iframe使用height属性之前要先保证body、html等父标签的height是100%
贴上页面完整代码
<!DOCTYPE html>
<html style="height: 100%">
<head>
<title>PxAllotIndex.html</title>
<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<meta name="content-type" content="text/html; charset=UTF-8">
</head>
<body style="height: 100%">
<iframe id="ifram" width="40%" frameborder="0" scrolling="auto" height="100%" src="PxWarehouseManage.html"></iframe>
<iframe width="55%" frameborder="0" scrolling="auto" src="PxWarehouseManage.html"></iframe>
</body>
</html>