[英]how to make a picture stretchable when window is enlarging by width
我想根据div大小变化使“ img / rsz_indexpage_image.jpg”图片可拉伸。当放大div图片的宽度不符合预期时。如何通过引导程序做到这一点。 现在放大时图像大小是静态的。
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<script type="text/javascript" src="js/jquery.min.js"></script>
<script type="text/javascript" src="js/bootstrap.min.js"></script>
<script type="text/javascript" src="js/loginjs.js"></script>
<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css">
<link rel="stylesheet" type="text/css" href="css/logincss.css">
</head>
<body>
<div class="container">
<div class="row vertical-offset-100">
<div class="col-md-4 col-md-offset-4">
<div class="panel panel-default">
<div class="panel-heading">
<div class="row-fluid user-row">
<img src="img/rsz_indexpage_image.jpg" class="img-responsive" alt="Conxole Admin"/>
</div>
</div>
<div class="panel-body">
<form accept-charset="UTF-8" role="form" class="form-signin">
<fieldset>
<label class="panel-login">
<div class="login_result"></div>
</label>
<input class="form-control" placeholder="Username" id="username" type="text">
<input class="form-control" placeholder="Password" id="password" type="password">
<br></br>
<input class="btn btn-lg btn-success btn-block" type="submit" id="login" value="Login »">
</fieldset>
</form>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
如果要保持宽高比,则将width:100%和height:auto
如果要覆盖整个父元素,则高度:100%,宽度:100%
以及如何使用.img响应的方式
.img-responsive {
display: block;
width: 100%;
height: auto;
margin: auto;
}
window.onresize = function(event) {
updateImageSize()
};
function updateImageSize() {
$(".img-responsive").each(function(){
var ratio_cont = jQuery(this).width()/jQuery(this).height();
var $img = jQuery(this).find("img");
var ratio_img = $img.width()/$img.height();
if (ratio_cont > ratio_img)
{
$img.css({"width": "100%", "height": "auto"});
}
else if (ratio_cont < ratio_img)
{
$img.css({"width": "auto", "height": "100%"});
}
});
};
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