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小技巧:让文章的大图片不破坏布局

(16-04-19 08:51)

解决页面出现图片过大、撑破表格或不显示超出部分图片的问题

相信很多朋友,都曾遇到过,发表一篇普通文章,如果图片宽度超过内容区域大小,图片就会把表格撑大,打乱面页的布局,懂CSS的朋友能会通过css来定义,让超出的部分隐藏起来,但这样,图片的美观性就很差,显示不出来超出的部分,论坛中还有一些朋友,用css方法,当图片过大后,将图片自动缩小,但是我试过,因为CSS对各个浏览器存在兼容问题,我在IE6下测试,一点作用也没有。下面给大家介绍一下我在DEDECMS里的方法(不用修改源程序,只需要在模板里使img加上JS控制代码,然后将原始图片等比例缩小)。

第一步:

在img加上便签,还要去掉height属性。

修改内容页模板的{dede:field.body /}
{dede:field.body runphp='yes'}
$content = @me;
$mode1 = "/<img/";
$mode2 = "/height=\"(\d+)\" /";
$str1 = "<img onload=\"javascript:ImgReSize(this)\"";
$content = preg_replace($mode1,$str1,$content);
$content = preg_replace($mode2,"",$content);
@me = $content;
{/dede:field.body}

第二步:

将下面代码插入到<head></head>中,注意那个670的数值,这个值意思是当图片超过这个数值,自动将图片缩小,宽度缩小为670,高度自动按比例缩小,这样不会变型。

<script language='javascript'>
function ImgReSize(e)
{

if(e.width>670) // 670可根据你文章的内容区域大小,可调整
{
e.width=670; // 等同上面你设的那个数值
e.style.width="";
}
if(e.height>10)
{
e.style.height="";
}

}
</script>

到这里,就完活了,如果你懂CSS最好找到对应的CSS,将它的宽设定好,然后定义一下,超出部分隐藏,因为有时候,文章在加载的过程中,显示的是你原始大小,加载完成后,JS才会起作用,将图片缩小。


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