typescript Angular 6 升级：debounceTime 不是主题的属性
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/50191318/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Angular 6 upgrade: debounceTime is not property of Subject
提问by Logan_B
I am attempting to upgrade my app from Angular 5 to Angular 6. I followed the steps on the https://update.angular.io/At least i think i did.
我正在尝试将我的应用程序从 Angular 5 升级到 Angular 6。我按照https://update.angular.io/上的步骤操作 至少我认为我做到了。
The Error is :
错误是：
Property 'debounceTime' does not exist on type 'Subject<string>'.
Also my components lost the debounceTime import. I think the ng update removed it.
我的组件也丢失了 debounceTime 导入。我认为 ng 更新删除了它。
回答by Logan_B
I solved it with the help of @Siva636 and @Andrew Lobban.
我在@Siva636 和@Andrew Lobban 的帮助下解决了这个问题。
I needed to use pipe:
我需要使用管道：
this.field$.pipe(
debounceTime(400),
distinctUntilChanged())
回答by Heena Manglani
As of Angular 6.1.8, just need to import and add pipe like below example
从 Angular 6.1.8 开始，只需要像下面的例子一样导入和添加管道
import {debounceTime} from 'rxjs/operators';Then on field just before the observable subscribe method call pipe(debounceTime(1000)) like below:
然后在可观察订阅方法调用 pipe(debounceTime(1000)) 之前的字段上，如下所示：
emailControl.valueChanges.pipe(debounceTime(1000)).subscribe(value => this.setMessage(emailControl));And that's it, it's just a updated answers of @tiago's answer - where she is defining const debouncetime - we don't really need to use const and pipe.
就是这样，这只是@tiago 答案的更新答案——她在其中定义了 const debouncetime——我们真的不需要使用 const 和管道。
回答by jmuhire
Following the reactivex docs, you should also subscribe to the pipe observable :
遵循reactivex docs，您还应该订阅管道observable：
.pipe(
debounceTime(500),
distinctUntilChanged(),
map((val) => {
...
})
)
.subscribe();
回答by Tiago Neiva
i am sorry for the delay but i just get this problem today and fixed like this. i solve this issue like this: first import like this:
我很抱歉延迟，但我今天刚遇到这个问题并像这样修复。我是这样解决这个问题的：首先像这样导入：
import {debounceTime} from 'rxjs/operators';
import {pipe} from 'rxjs'
Then create a const like this (i tried to do directly without duplicating pipe but didn′t work so i found this solution):
然后创建一个像这样的常量（我试图直接做而不复制管道但没有用所以我找到了这个解决方案）：
const debouncetime = pipe(debounceTime(1000));
And then use it before you subscribe for example i was doing an email validator with messages:
然后在订阅之前使用它，例如我正在做一个带有消息的电子邮件验证器：
const emailControl = this.registerForm.get('email');
emailControl.valueChanges
.pipe(debouncetime)
.subscribe(value => this.setEmailMessage(emailControl))
dont know if its the best solutions but it works perfectly. I hope it helps some one!
不知道它是否是最好的解决方案，但它完美无缺。我希望它可以帮助某人！
