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我的聊天頁面有小問題:)想要做一些聊天應用程序 我有登錄工作,但當我點擊按鈕聊天它崩潰。我是初學者,所以也許我看不到正確的。這是在離子3聊天頁面socket.io離子錯誤
Home.ts
import { Component } from '@angular/core';
import { NavController, IonicPage } from 'ionic-angular';
import { Auth } from '@ionic/cloud-angular';
import { User } from '@ionic/cloud-angular';
import { LoginPage } from '../login/login';
import { About } from '../about/about';
import { ChatPage } from '../chat/chat';
@IonicPage()
@Component({
selector: 'page-home',
templateUrl: 'home.html'
})
export class HomePage {
constructor(public navCtrl: NavController, public auth: Auth, public user: User) {
console.log(user);
}
logout() {
this.auth.logout();
this.navCtrl.setRoot(LoginPage);
}
about(){
this.navCtrl.setRoot(About);
this.navCtrl.push(About);
}
chat(){
this.navCtrl.setRoot(ChatPage);
this.navCtrl.push(ChatPage);
}
}
home.html的
<ion-header>
<ion-navbar>
<ion-title>
Home
</ion-title>
<ion-buttons end>
<button ion-button icon-only (click)="logout()">
<ion-icon name="exit"></ion-icon>
</button>
</ion-buttons>
</ion-navbar>
</ion-header>
<ion-content padding>
<h2>Welcome back, {{ user.details.name }}</h2>
<p>
<button ion-button color="secondary" block>Something</button>
</p>
<p>
<button ion-button color="secondary" block (click)="chatPage()">Chat</button>
</p>
<p>
<button ion-button color="secondary" block (click)="about()">About</button>
</p>
</ion-content>
chat.ts
import { Component, NgZone, ViewChild } from '@angular/core';
import { NavController, Content } from 'ionic-angular';
import { Validators, FormBuilder } from '@angular/forms';
import * as io from 'socket.io-client';
import { HomePage } from '../home/home';
@Component({
selector: 'page-chat',
templateUrl: 'chat.html'
})
export class ChatPage {
public chatForm: any;
@ViewChild(Content) content: Content;
messages:any = [];
socketHost: string = "http://localhost:3000/";
socket:any;
chat:any;
username:string;
zone:any;
chatField: any;
constructor(public navCtrl: NavController, private fb: FormBuilder){
this.socket = io.content(this.socketHost);
this.zone = new NgZone({enableLongStackTrace: false});
this.socket.on("chat me", (msg) =>{
this.zone.run (() =>{
this.messages.push(msg);
this.content.scrollToBottom();
});
});
this.chatForm = fb.group({
'chatField': ['', Validators.compose([Validators.required])],
});
this.chatField = this.chatForm.controls['chatField'];
}
chatSend(v) {
let data = {
message: v.chatText,
username: this.username
}
this.socket.emit('new message', data);
this.chat = "";
}
onSubmit(value: string): void {
if(this.chatForm.valid) {
}
}
}
chat.html
<ion-header>
<ion-navbar>
<button ion-button menuToggle>
<ion-icon name="menu"></ion-icon>
</button>
<ion-title>Chat</ion-title>
</ion-navbar>
<ion-input [(ngModel)] = "username" placeholder="Username"> </ion-input>
</ion-header>
<ion-content class="chat">
<ion-list>
<div *ngFor="let data of messages">
<ion-item *ngIf="username === data.username" style="border-right: solid 5px red;">
<p class="chat-text" item-left>
<strong> {{data.username}}: </strong>
{{data.message}}
</p>
<p class="chat-time" item-right>
{{data.date | date:'dd/MM/yyyy'}}
</p>
</ion-item>
<ion-item *ngIf="username !== data.username" style="border-right: solid 5px green;">
<p class="chat-text" item-left>
<strong> {{data.username}}: </strong>
{{data.message}}
</p>
<p class="chat-time" item-right>
{{data.date | date:'dd/MM/yyyy'}}
</p>
</ion-item>
</div>
</ion-list>
</ion-content>
<ion-footer>
<form padding [formGroup]="chatForm" (ngSubmit)="onSubmit(chatForm.value)">
<ion-item>
<ion-input [(ngModel)]="chatField" name="chatText" required placeholder="type here....."></ion-input>
</ion-item>
<br/><br/>
<button type="submit" ion-button [disabled]="!chatForm.valid" block>Send</button>
</form>
</ion-footer>
,我得到的錯誤是
Runtime Error
co.chatPage is not a function
Stack
TypeError: co.chatPage is not a function
at Object.eval [as handleEvent] (ng:///AppModule/HomePage.ngfactory.js:290:24)
at handleEvent (http://localhost:8100/build/main.js:12302:138)
at callWithDebugContext (http://localhost:8100/build/main.js:13510:42)
at Object.debugHandleEvent [as handleEvent] (http://localhost:8100/build/main.js:13098:12)
at dispatchEvent (http://localhost:8100/build/main.js:9277:21)
at http://localhost:8100/build/main.js:9867:38
at HTMLButtonElement.<anonymous> (http://localhost:8100/build/main.js:35897:53)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:12256)
at Object.onInvokeTask (http://localhost:8100/build/main.js:4613:37)
at t.invokeTask (http://localhost:8100/build/polyfills.js:3:12177)
at n.runTask (http://localhost:8100/build/polyfills.js:3:7153)
at HTMLButtonElement.invoke (http://localhost:8100/build/polyfills.js:3:13213)
Ionic Framework: 3.1.1
Ionic App Scripts: 1.3.7
Angular Core: 4.0.2
Angular Compiler CLI: 4.0.2
Node: 7.2.0
OS Platform: Windows 10
Navigator Platform: Win32
User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) App
運行時錯誤 未捕獲的(在承諾):類型錯誤:__WEBPACK_IMPORTED_MODULE_3_socket_io_client __內容不是函數類型錯誤:__WEBPACK_IMPORTED_MODULE_3_socket_io_client __內容並不在新ChatPage 我得到現在這個錯誤 –
看起來與問題無關的功能。它是更多與添加'socket.io'庫及其導入有關。你以前的錯誤掩蓋了這個錯誤,因爲它沒有早些時候被調用..我建議..創建一個新的問題,你如何安裝這個和你的package.json包含什麼等等。 –
它已經添加在離子框架和chat.ts你有導入的套接字 –