如何创建比例图像高度/宽度 [英] how to create proportional image height/width

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本文介绍了如何创建比例图像高度/宽度的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

所以,我想要一个图像调整到其原始高度/宽度的30%。假设你不知道它的高度或宽度,你将如何使用CSS / HTML?

解决方案

Update:



使用 display:inline-block;

 <$ c $ 

c>< div class =holder>
< img src =your-image.jpg/>
< / div>

CSS

  .holder {
width:auto;
display:inline-block;
}

.holder img {
width:30%; / *将图像缩小到其原始宽度的30%* /
height:auto;
}

包装器折叠到图像的原始宽度, code> width:30%图像上的CSS规则会导致图像缩小到其父宽度(即其原始宽度)的30%。



以下是演示






很遗憾,没有纯HTML / CSS方法可以执行这样的计算。 / strike>然而,使用一个jQuery片断很简单:

  $('img.toResizeClass')。 (){

var $ img = $(this),
imgWidth = $ img.width(),
imgHeight = $ img.height();

if(imgWidth> imgHeight){
$ img.width(imgWidth * 0.3);
} else {
$ img.height(imgHeight * 0.3);
}
});


So, I want to have an image resized to 30% of its original height/width. Pretend you don't know its height or width, how would you go about it using only CSS/HTML?

解决方案

Update:

Using a display: inline-block; wrapper, it's possible to make this happen with CSS only.

HTML

<div class="holder">
    <img src="your-image.jpg" />
</div>

CSS

.holder {   
  width: auto;
  display: inline-block;    
}

.holder img {
  width: 30%; /* Will shrink image to 30% of its original width */
  height: auto;    
}​

The wrapper collapses to the original width of the image, and then the width: 30% CSS rule on the images causes the image to shrink down to 30% of its parent's width (which was its original width).

Here's a demo in action.


Sadly no pure HTML/CSS way to do it as neither is geared to perform calculations like that. However, it's pretty simple with a snippet of jQuery:

$('img.toResizeClass').each(function(){

    var $img = $(this),
        imgWidth = $img.width(),
        imgHeight = $img.height();

    if(imgWidth > imgHeight){
        $img.width(imgWidth * 0.3);
    } else {
        $img.height(imgHeight * 0.3);
    }
});

这篇关于如何创建比例图像高度/宽度的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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