2016年10月26日
[CSS] Control Image Aspect Ratio Using CSS (object-fit)
摘要： Resize images and videos to fill their parent and maintain their aspect ratio with pure CSS. The new object-fit and object-position properties allow y 阅读全文
posted @ 2016-10-26 22:36 Zhentiw 阅读(210) 评论(0) 推荐(0)
[Angular2 Form] Reactive form: valueChanges, update data model only when form is valid
摘要： For each formBuild, formControl, formGroup they all have 'valueChanges' prop, which is an Observable. If you want to only update form data model when 阅读全文
posted @ 2016-10-26 19:59 Zhentiw 阅读(762) 评论(0) 推荐(0)
[RxJS] Conclusion: when to use Subjects
摘要： As a conclusion to this course about RxJS subjects, let's review when and why should you use them. For certain cases, subjects are absolutely necessar 阅读全文
posted @ 2016-10-26 18:52 Zhentiw 阅读(252) 评论(0) 推荐(0)
[RxJS] Multicast with a selector argument, as a sandbox
摘要： Let's explore a different use of the multicast() operator in RxJS, where you can provide a selector function as a sandbox where the shared Observable 阅读全文
posted @ 2016-10-26 18:44 Zhentiw 阅读(483) 评论(0) 推荐(0)
[RxJS] Reusable multicasting with Subject factories
摘要： The way we use publish() (or multicast with an RxJS Subject) makes the shared Observable not reusable if the shared execution happens to complete or e 阅读全文
posted @ 2016-10-26 18:19 Zhentiw 阅读(324) 评论(0) 推荐(0)
[Angular2 Form] Reactive Form, FormBuilder
摘要： Import module: Define the html: ts: group() function take an object param, each object stands for a field in template, which refer to 'formControlName 阅读全文
posted @ 2016-10-26 04:44 Zhentiw 阅读(1612) 评论(0) 推荐(0)