对于OnPush模式,它会告诉Angular,只有在组件的input被改变时才需要检查。这意味着如果一个父组件没有改变,那么子组件的input不会改变,所以直接跳过change detection。因为一个input改变并不代表组件本身发生改变:可能input是一个包含组件没有使用的改变了的属性的对象。所以保持对数据结构的关注可以帮助优化,当数据被传递...
| [](https://github.com/angular/angular/commit/061f3d1086421b921403f7d358c02f84927b699b) | Drop public `factories` property for `IterableDiffers` : Breaking change (#49598) | | [. Here we change the message value. comRef.instance.message ="I am last"; And change the style thought Renderer: comRef.instance.renderer.setElementStyle( comRef.instance.input.nativeEle...
You may have a look atcore-layout(GitHub repo), an Angular demo app that shows how you can use theiscrolldirective in a responsive-design web-app with support for both drawers (slide-out menus) and modals. For example, the demo shows how to handle DOM content generated dynamically through...
only have their host bindings refreshed and `ngDoCheck run` during change detection if they are dirty. Previously, a bug in the change detection would result in the `OnPush` configuration of dynamically created components to be ignored when ...
so i require a stylesheet dynamically in the app.component.ts and in that stylesheet i import the other stylesheets. (so i have double code) for several apps. but it's working. STILL HAVE THEN THE PROBLEM: That the variables inside the style file for components which are included like '...
Previously, a bug in the change detection would result in the OnPush configuration of dynamically created components to be ignored when executing host bindings and the ngDoCheck function. This is rarely encountered but can happen if code has a handle on the ComponentRef instance and updates values...
Runnpm run startto serve the demo athttp://localhost:4200/. The app will automatically reload if you change any of the source files. Building Runng buildto build the project. The build artifacts will be stored in thedist/directory.
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style as ShapeStyleModel).strokeColor = 'White'; return node; } snapLineColor(args: any): void { //Update snapLineColor dynamically (this.diagram as any).snapSettings.snapLineColor = args.target.value; (this.diagram as any).dataBind(); } }...