<img src="1.jpg" width="146px" height="145">
<img src="2.jpg" width="246px" height="311">
<img src="3.jpg" width="346px" height="345">
<img src="4.jpg" width="266px" height="215">
...
</div>
<script>
window.onload=function(){
var imgs=document.getElementsByTagName("img")
for(var i=0i<imgs.lengthi++){
imgs[i].width=300
imgs[i].removeAttribute("height")
}
}
</script>
js版和css版自动按比例调整图片大小方法，分别如下：
<title>javascript图片大小处理函数</title><script language=Javascript>
var proMaxHeight = 150
var proMaxWidth = 110
function proDownImage(ImgD){
var image=new Image()
image.src=ImgD.src
if(image.width>0 && image.height>0){
var rate = (proMaxWidth/image.width < proMaxHeight/image.height)?proMaxWidth/image.width:proMaxHeight/image.height
if(rate <= 1){
ImgD.width = image.width*rate
ImgD.height =image.height*rate
}
else {
ImgD.width = image.width
ImgD.height =image.height
}
}
}
</script>
</head>
<body>
<img src="999.jpg" border=0 width="150" height="110" onload=proDownImage(this) />
<img src="room.jpg" border=0 width="150" height="110" onload=proDownImage(this) />
</body>
纯css的防止图片撑破页面的代码，图片会自动按比例缩小：
<style type="text/css">
.content-width {MARGIN: autoWIDTH: 600px}
.content-width img{MAX-WIDTH: 100%!importantHEIGHT: auto!importantwidth:expression(this.width > 600 ? "600px" : this.width)!important}
</style>
<div class="content-width">
<p><img src="/down/js/images/12567247980.jpg"/></p>
<p><img src="/down/js/images/12567247981.jpg"/></p>
</div>
