uniapp换皮肤功能demo

不支持scss的需要提前安装：https://www.runoob.com/sass/sass-install.html

全代码下载地址

1.新建一个uni-app的默认模板

2.构建如下图的项目目录结构，uni.scss是默认模板中自带的

3.写style.scss文件

/*
@mixin 指令允许我们定义一个可以在整个样式表中重复使用的样式。
*/
@mixin bg_color($color) {
    //更换背景颜色
	background-color: $color ;
	[data-theme = "theme1"] & {
   
		background-color: $background-color-theme1 !important;
	}
	[data-theme = "theme2"] & {
   
		background-color: $background-color-theme2 !important;
	}		
}
 
 @mixin bg_img($image) {
    //更换背景图片
 	background-image: $image ;
 	[data-theme = "theme1"] & {
   
 		background-image: url($background-image-theme1)!important;
 	}
 	[data-theme = "theme2"] & {
   
 		background-image: url($background-image-theme2)!important;
 	}
 }
  
 
@mixin ft_color($color) {
    //更换文字颜色
	color: $color;
	[data-theme = "theme1"] & {
   
		color: $text-color-theme1 !important;
	}
	[data-theme = "theme2"] & {
   
		color: $text-color-theme2 !important;
	}	
}

@mixin login_content($content) {
    //更换image标签内容
	content: $content;
	[data-theme = "theme1"] & {
   
		content:url($text-content-theme1) !important;
	}
	[data-theme = "theme2"] & {
   
		content: url($text-content-theme2) !important;
	}	
}

4.在uni.scss文件中定义样式的具体值

@import './scss/style.scss'