摘要：
新建项目：ng new my-app 新建组件 ng g c name //组件名称（深层次参考:https://www.cnblogs.com/mary-123/p/10484648.html） 默认基于css ng g c name --style less/sass/scss 设置基于less 阅读全文
摘要：
<some-element [ngClass]="'first second'">...</some-element> <some-element [ngClass]="['first', 'second']">...</some-element> <some-element [ngClass]=" 阅读全文