How to use LESS with WebStorm in WeChat mini program-Mini Program Development-php.cn

How to use LESS with WebStorm in WeChat mini program

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Release： 2018-06-26 16:37:29

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This article mainly introduces the relevant information about using WebStorm and LESS in WeChat mini programs. Friends who need it can refer to it

Prerequisite

I am not familiar with the front end, and many of them need practice

I found a css demo on the Internet. After putting it in the WeChat applet, I can run it.

The picture is very big and I didn’t make it. The loading may be a bit slow. Slow (not related, I won’t talk about it)

Less environment

Less requires npm of nodejs
The environment of nodejs is omitted here
My own Baidu

Through

npm install less -g

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Install less
(if you have not used it, it can be understood as maven library, gradle library , pods library)

WebStorm’s Less uses

first associate the corresponding less

Of course, for the corresponding wxss file displayed in webstorm,

you can refer to your other articles

WebStorm: Problems Encountered

Here, As long as you create the less file, the corresponding wxss file will be automatically generated (of course, after writing and saving the less file, the wxss file will be automatically refreshed, which is very convenient)

Direct comparison between wxss and less

Let’s take a look at the page first

The page is very simple

There is only one sky applying 3 cloud classes

view class="container">
 <view class="sky">
  <view class="clouds_one"> </view >
  <view class="clouds_two"> </view >
  <view class="clouds_three"> </view >
  <view class="clouds_three"></view>
 </view>

</view>

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Looking at the css

.sky {
 height: 480px;
 background: #007fd5;
 position: relative;
 overflow: hidden;
 animation: sky_background 50s ease-out infinite;
}
.sky .clouds_one {
 background: url("../../resources/cloud/cloud_one.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 50s linear infinite;
 transform: translate3d(0, 0, 0);
}
.sky .clouds_two {
 background: url("../../resources/cloud/cloud_two.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 75s linear infinite;
 transform: translate3d(0, 0, 0);
}
.sky .clouds_three {
 background: url("../../resources/cloud/cloud_three.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 120s linear infinite;
 transform: translate3d(0, 0, 0);
}
@keyframes cloud {
 0% {
 left: 0;
 }
 100% {
 left: -200%;
 }
}

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We found that there are many duplicates

The function is not difficult, but it takes up 70 lines, and it is difficult to reuse the modified paintings

, and it also depends on the logic inside

It is also inconvenient to modify

Usage of Less

After we simply define variables and methods

Using less is roughly like this

@dodo-out-height : 480px; //@dodo-out-height : 480rpx;
@dodo-bg-sky : #007fd5;
@dodo-img-url-clouds_one : "../../resources/cloud/cloud_one.png";
@dodo-img-url-clouds_two : "../../resources/cloud/cloud_two.png";
@dodo-img-url-clouds_three : "../../resources/cloud/cloud_three.png";

.sky {
 height: @dodo-out-height;
 background: @dodo-bg-sky;
 position: relative;
 overflow: hidden;
 animation: sky_background 50s ease-out infinite;
}
.sky .clouds_one {
 .dodo_clouds(@url:@dodo-img-url-clouds_one, @time: 50s)
}
.sky .clouds_two {
 .dodo_clouds(@url:@dodo-img-url-clouds_two, @time: 75s)
}
.sky .clouds_three {
 .dodo_clouds(@url:@dodo-img-url-clouds_three, @time: 120s)
}
.dodo_clouds (@url: @dodo-img-url-clouds_one, @height: 100%, @width: 300%, @time: 100s){
 background: url(@url);
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud @time linear infinite;
 transform: translate3d(0, 0, 0);
}
@keyframes cloud {
 0% {
 left: 0
 }
 100% {
 left: -200%
 }
}

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After saving,

we found that the corresponding wxss file was also changed, and a readable file was directly generated

and There is not much difference between the files written directly before

The corresponding variables and methods will not appear

.sky {
 height: 480px;
 background: #007fd5;
 position: relative;
 overflow: hidden;
 animation: sky_background 50s ease-out infinite;
}
.sky .clouds_one {
 background: url("../../resources/cloud/cloud_one.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 50s linear infinite;
 transform: translate3d(0, 0, 0);
}
.sky .clouds_two {
 background: url("../../resources/cloud/cloud_two.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 75s linear infinite;
 transform: translate3d(0, 0, 0);
}
.sky .clouds_three {
 background: url("../../resources/cloud/cloud_three.png");
 position: absolute;
 left: 0;
 top: 0;
 height: 100%;
 width: 300%;
 animation: cloud 120s linear infinite;
 transform: translate3d(0, 0, 0);
}
@keyframes cloud {
 0% {
 left: 0;
 }
 100% {
 left: -200%;
 }
}

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Preview:

There is no difference, it’s just that the code is more convenient to write (it is recommended that the machine configuration can draw, and do not use the IDE provided by WeChat for development, the efficiency is too low)

Less is very powerful. I will go deeper into other aspects when I have time.

I feel that less is useful because of its reusability:)

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