less_html/css_WEB-ITnose
LESS语言的语法: (1)LESS文件支持所有的CSS原生语法 (2)LESS支持多行注释(会被转换到CSS文件)、单行注释(不会出现在CSS文件中) (3)LESS中可以声明变量(Variable),语法:@变量名: 值(颜色/数字/尺寸/字符串); (4)LESS中可以声明混入/混合(Mixin),语法:.style1 { .... }.style2 {.style1;} (5)带参数混入,语法:.style1( ) { ... }.style1(@var1 ) { .... }.style1(@var1, @var2:默认值) { ... } (6)参数的引导,语法:.style1(@var) when (@var<=值) { ... } (7)LESS可以对各种类型的值(颜色/数字/百分比)执行算数元素color: #888 - #129; (8)LESS支持嵌套.style1 {.style2 {&:hover{ }}}.style1{ }.style1 .style2 { }.style1 .style2:hover { } (9)LESS内置了若干个可以直接调用的行数image-width('../img/2.jpg');image-height('...')lighten(color, num) 把指定的颜色变亮指定的数值darken(color, num) 把指定的颜色变暗指定的数值 (10)文件导入@import "xx.less"; 提示:less文件中的@import属于“服务器端导入”——在服务器端就要导入的文件合并在当前文件中;CSS文件中的@import属于“客户端导入”——要求客户端发HTTP请求,获取目标文件。

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