Using JS automatic generation and other proportions of the sketch
Source: Internet
Author: User
JS <!--
This example shows that proportional thumbnails are automatically displayed when the picture is loaded. When doing Web applications will often encounter customers upload a large picture, but when the display of the outline of the height and width than manually set, because the shape of the picture will cause the display deformation, here with a small script to solve this problem, You can modify it to make it more generic, such as adding an img parameter to the wa_setimgautosize () function, and then sending yourself to call the function in the picture's onload= event.
-->
<HTML>
<HEAD>
<TITLE> demo picture and so on scale shrink </TITLE>
<script>
function Wa_setimgautosize ()
{
var img=document.all.img1;//get Pictures
var maxwidth=200;//set Picture width limit
var maxheight=100;//set Picture height limit
var heightwidth=img.offsetheight/img.offsetwidth;//set aspect ratio
var widthheight=img.offsetwidth/img.offsetheight;//set ratio of width to height
if (img.readystate!= "complete") return false;//ensure that the picture is fully loaded
if (img.offsetwidth>maxwidth) {
Img.width=maxwidth;
Img.height=maxwidth*heightwidth;
}
if (img.offsetheight>maxheight) {
Img.height=maxheight;
Img.width=maxheight*widthheight;
}
}
</script>
</HEAD>
<BODY>
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