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                #### 1.3while函數 定義:@while 指令也需要 SassScript 表達式(像其他指令一樣),并且會生成不同的樣式塊,直到表達式值**為 false 時停止循環**。這個和 @for 指令很相似,只要 @while 后面的**條件為 true 就會執行** **while循環格式:** ~~~ @while(循環條件判斷){ 執行代碼; 跳出循環條件; } ~~~ 流程圖 ![](https://box.kancloud.cn/08dc2d525067f11e0c1ec2b4b9aaea9d_298x337.png) 列:sass樣式 ~~~ $types: 4; $type-width: 20px; @while $types > 0 {//循環條件判斷 .while-#{$types} { width: $type-width + $types; }//執行代碼 $types: $types - 1;//跳出循環條件 } ~~~ 轉化成css ~~~ .while-4 { width: 24px; } .while-3 { width: 23px; } .while-2 { width: 22px; } .while-1 { width: 21px; } ~~~
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