我正在尝试从子组件向父组件发出事件。
家长:
parent .ts
onChangeUpload(event){
console.log('event');
console.log(event);
}
<app-upload (uploadEmit)="onChangeUpload($event)"></app-upload>
child :
@Output() uploadEmit: EventEmitter = new EventEmitter();
this.uploadEmit.emit('upload successful');
我得到了这个错误:
core.js:1448 ERROR Error: Uncaught (in promise): TypeError: instance[output.propName].subscribe is not a function
@angular/cli: 1.7.3
@angular-devkit/build-optimizer: 0.3.2
@angular-devkit/core: 0.3.2
@angular-devkit/schematics: 0.3.2
@ngtools/json-schema: 1.2.0
@ngtools/webpack: 1.10.2
@schematics/angular: 0.3.2
@schematics/package-update: 0.3.2
typescript: 2.6.2
webpack: 3.11.0
最佳答案
import { EventEmitter } from 'events';
这是您的导入声明吗?
如果是,改成
import { EventEmitter } from '@angular/core';
并禁用 VS Code 自动导入。 :)
关于angular - TypeError : instance[output. propName].subscribe 不是函数,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49901620/