SASS循环以输出具有唯一编号和背景图像的类 [英] SASS Loop to output classes with unique number and background-image

问题描述

我偶然发现了一个SASS循环非常好的情况。我有一个< div> 的加载，每个都有一个唯一的类遵循 .band-（number） / code>，我的HTML的简化版本将看起来像这样...

I've stumbled across a situation where a SASS loop would be great. I have a load of <div>'s, each one has the a unique class that follows the pattern of .band-(number), a simplified version of my HTML would look like this...

<div class="band-1"></div>
<div class="band-2"></div>
<div class="band-3"></div>
etc.

每个元素都有一个独特的 image ，但是图像的命名约定遵循 div 本身的命名约定。我的CSS需要输出这个...

Each of these elements has a unique background-image, but the naming convention of the image follows that of the divs themselves. My CSS needs to output this...

.band-1 {
   background-image:url('../img/image_01.png');
}
.band-2 {
   background-image:url('../img/image_02.png');
}
.band-3 {
   background-image:url('../img/image_03.png');
}

我如何以简洁的方式输出？提前感谢。

How would I go about outputting this in a concise way? Thanks in advance.

推荐答案

您可以使用为循环：

@for $i from 1 through 15 {
  @if $i < 10 {
    .band-#{$i} { 
      background-image:url("../img/image_0#{$i}.png");
    }
  } @else {
    .band-#{$i} { 
      background-image:url("../img/image_#{$i}.png");
    }    
  }
}

DEMO

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