关于scss:scss基础语法的简单使用

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1. 变量申明及应用

$color: red;
.box {color: $color;}

2. mixin 和 include

2.1 简略应用
$bgColor: red;
@mixin bg {background: $bgColor;}
.box {@include bg;}

编译后果:

.box {background: red;}
2.2 进阶应用
$namespace: 'zz';
@mixin B($name){
    $aaa: $namespace + '_' + $name;
    .#{$aaa} {@content;}
}
@include B(input) {font-size: 12px;}

编译后果:

.zz_input {font-size: 12px;}

3. 列表和循环

3.1 for 循环
$list: red, green, blue;
@for $i from 1 through 3 {.status-#{$i} {color: nth($list, $i)
    }
}
@for $i from 1 to 4 {.status-#{$i} {color: nth($list, $i)
    }
}

注:nth能够获取数组的某个元素;
throughto 的编译后果统一,要留神是的to 走不到最初一个数

.status-1 {color: red;}

.status-2 {color: green;}

.status-3 {color: blue;}
3.2 each 循环
$list:red,green,blur;

@each $item in $list {.#{$item} {color: $item}
}

编译后果:

.red {color: red;}

.green {color: green;}

.blur {color: blur;}

4. map 构造

$colorMap: (
    fail: 'red',
    success: 'green',
    pendding: 'blue'
);
$bgColorMap: (
    fail: 'red',
    success: 'green',
    pendding: 'blue'
);
@each $key, $value in $colorMap {.#{$key} {
        color: $value;
        border-color: map-get($bgColorMap, $key)
    }
}

编译后果:

.fail {
  color: "red";
  border-color: "red";
}

.success {
  color: "green";
  border-color: "green";
}

.pendding {
  color: "blue";
  border-color: "blue";
}

5. 函数

@function vw($n) {@return calc($n*100vw/750)
};
@function px($n) {@return calc(#{var(--rootWidth)} * #{$n} / 1920);
}
@function vh($n) {@return calc($n * 100vh / 1080);
}
body {font-size: vw(10)
}

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