Zhentiw - 博客园

2016年10月28日

[Angular2 Animation] Delay and Ease Angular 2 Animations

摘要： By default, transitions will appear linearly over time, but proper animations have a bit more customization to them by delaying when they start and co 阅读全文

posted @ 2016-10-28 17:38 Zhentiw 阅读(266) 评论(0) 推荐(0)

[Angular2 Animation] Control Undefined Angular 2 States with void State

摘要： Each trigger starts with an “undefined” state or a “void” state which doesn’t match any of your currently defined states. You have to be aware of when 阅读全文

posted @ 2016-10-28 17:37 Zhentiw 阅读(373) 评论(0) 推荐(0)

2016年10月27日

[CSS] Use Generated Content to Augment Information

摘要： When you create a pseudo element, you have access to the parent HTML attributes. They can be used inside the content attribute of a pseudo element. 阅读全文

posted @ 2016-10-27 19:09 Zhentiw 阅读(145) 评论(0) 推荐(0)

[Angular2 Form] Reactive Form, show error message for one field

摘要： In this tutorial we are going to learn how we mark form fields in error and display error messages to the user in the case of Angular 2 model driven f 阅读全文

posted @ 2016-10-27 01:09 Zhentiw 阅读(321) 评论(0) 推荐(0)

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(215) 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(768) 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(258) 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(486) 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(328) 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(1618) 评论(0) 推荐(0)

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