站长资源网络编程
js 控制图片大小核心讲解
简介缩放图片脚本分享 复制代码 代码如下: New D</div>
<div class="news_infos"><div id="MyContent">缩放图片脚本分享 <BR><U>复制代码</U> 代码如下: <BR><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <BR><html> <BR><head> <BR><title> New Document </title> <BR><meta name="Generator" content="EditPlus"> <BR><meta name="Author" content=""> <BR><meta name="Keywords" content=""> <BR><meta name="Description" content=""> <br><br><script> <br><br>function AutoResizeImage(maxWidth,maxHeight){ <BR>var objImg = document.getElementById("operImg"); <BR>var img = new Image(); <BR>img.src = objImg.src; <BR>var hRatio; <BR>var wRatio; <BR>var Ratio = 1; <BR>var w = img.width; <BR>var h = img.height; <BR>wRatio = maxWidth / w; <BR>hRatio = maxHeight / h; <BR>if (maxWidth ==0 && maxHeight==0){ <BR>Ratio = 1; <BR>}else if (maxWidth==0){// <BR>if (hRatio<1) Ratio = hRatio; <BR>}else if (maxHeight==0){ <BR>if (wRatio<1) Ratio = wRatio; <BR>}else if (wRatio<1 || hRatio<1){ <BR>Ratio = (wRatio<=hRatio?wRatio:hRatio); <BR>} <BR>if (Ratio<1){ <BR>w = w * Ratio; <BR>h = h * Ratio; <BR>} <BR>objImg.height = h; <BR>objImg.width = w; <BR>} <BR></script> <br><br></head> <br><br><body> <br><br><img src="/UploadFiles/2021-04-02/1111.jpg"><br><input type="button" value="缩放至宽100px，等比例压缩" onclick="AutoResizeImage(100,0)"/> <br><br><input type="button" value="缩放至300px，等比例压缩" onclick="AutoResizeImage(300,0)"/> <br><br><input type="button" value="原图" onclick="AutoResizeImage(0,0)"/> <BR></body> <BR></html> <BR> <BR>重点js: <BR><U>复制代码</U> 代码如下: <BR>function AutoResizeImage(maxWidth,maxHeight){ <BR>var objImg = document.getElementById("operImg"); <BR>var img = new Image(); <BR>img.src = objImg.src; <BR>var hRatio; <BR>var wRatio; <BR>var Ratio = 1; <BR>var w = img.width; <BR>var h = img.height; <BR>wRatio = maxWidth / w; <BR>hRatio = maxHeight / h; <BR>if (maxWidth ==0 && maxHeight==0){ <BR>Ratio = 1; <BR>}else if (maxWidth==0){// <BR>if (hRatio<1) Ratio = hRatio; <BR>}else if (maxHeight==0){ <BR>if (wRatio<1) Ratio = wRatio; <BR>}else if (wRatio<1 || hRatio<1){ <BR>Ratio = (wRatio<=hRatio?wRatio:hRatio); <BR>} <BR>if (Ratio<1){ <BR>w = w * Ratio; <BR>h = h * Ratio; <BR>} <BR>objImg.height = h; <BR>objImg.width = w; <BR>} <BR></div>
</div>
</div>
<div class="share"> </div>
<div class="nextinfo">
<p>上一篇：<a href="http://m.paidiu.com/show/1/121489.html" title="js onload事件不起作用示例分析">js onload事件不起作用示例分析</a></p>
<p>下一篇：<a href="http://m.paidiu.com/show/1/121491.html" title="方便实用的jQuery checkbox复选框全选功能简单实例">方便实用的jQuery checkbox复选框全选功能简单实例</a></p>
</div>
<div class="otherlink">
<h2>最新资源</h2>
<ul>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619123.html" one-link-mark="yes" title="群星《奔赴！万人现场 第2期》[FLAC/分轨][518.87MB]"><span>群星《奔赴！万人现场 第2期》[FLAC/分轨][518.8</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619122.html" one-link-mark="yes" title="群星《奇妙浪一夏 (上海迪士尼度假区音乐)》[320K/MP3][43.91MB]"><span>群星《奇妙浪一夏 (上海迪士尼度假区音乐)》[32</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619121.html" one-link-mark="yes" title="群星《奇妙浪一夏 (上海迪士尼度假区音乐)》[FLAC/分轨][140.49MB]"><span>群星《奇妙浪一夏 (上海迪士尼度假区音乐)》[FL</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619120.html" one-link-mark="yes" title="【古典音乐】詹姆斯·高威《季节》1993[WAV+CUE]"><span>【古典音乐】詹姆斯·高威《季节》1993[WAV+CUE]</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619119.html" one-link-mark="yes" title="贝拉芳蒂《卡里普索之王》SACD[WAV+CUE]"><span>贝拉芳蒂《卡里普索之王》SACD[WAV+CUE]</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619118.html" one-link-mark="yes" title="小骆驼-《草原狼2(蓝光CD)》[原抓WAV+CUE]"><span>小骆驼-《草原狼2(蓝光CD)》[原抓WAV+CUE]</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619117.html" one-link-mark="yes" title="群星《欢迎来到我身边 电影原声专辑》[320K/MP3][105.02MB]"><span>群星《欢迎来到我身边 电影原声专辑》[320K/MP3</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619116.html" one-link-mark="yes" title="群星《欢迎来到我身边 电影原声专辑》[FLAC/分轨][480.9MB]"><span>群星《欢迎来到我身边 电影原声专辑》[FLAC/分轨</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619115.html" one-link-mark="yes" title="雷婷《梦里蓝天HQⅡ》 2023头版限量编号低速原抓[WAV+CUE][463M]"><span>雷婷《梦里蓝天HQⅡ》 2023头版限量编号低速原抓</span></a>
</li>
<li>
<i class="iconfont icon-point"></i>
<a class="text-sm" href="/show/1/619114.html" one-link-mark="yes" title="群星《2024好听新歌42》AI调整音效【WAV分轨】"><span>群星《2024好听新歌42》AI调整音效【WAV分轨】</span></a>
</li>
</ul>
</div>
</div>
<div class="sidebar">
</div>
</article>
<footer>
<p style="font-size: 14px;">友情链接:<a href="http://www.imxmx.com/" title="杰晶网络" target="_blank">杰晶网络</a> <a href="http://www.ddrfans.com/" title="DDR爱好者之家" target="_blank">DDR爱好者之家</a> <a href="http://www.nqxw.com/" title="南强小屋" target="_blank">南强小屋</a> <a href="/" title="黑松山资源网" target="_blank">黑松山资源网</a> <a href="http://www.dyhadc.com/" title="白云城资源网" target="_blank">白云城资源网</a> <a href="/sitemap1.xml">站点地图</a> <a href="/sitemap.xml">SiteMap</a></p>
<p>Design by <a href="http://m.paidiu.com">黑松山资源网</a> <a href="/">http://m.paidiu.com</a></p>
</footer>
<script src="/images/nav.js"></script>
<script type="text/javascript">
jQuery.noConflict();
jQuery(function() {
var elm = jQuery('#left_flow2');
var startPos = jQuery(elm).offset().top;
jQuery.event.add(window, "scroll", function() {
var p = jQuery(window).scrollTop();
jQuery(elm).css('position', ((p) > startPos) ? 'fixed' : '');
jQuery(elm).css('top', ((p) > startPos) ? '0' : '');
});
});
</script>
</body>
</html>