本地存储/会话存储

Question

我的Html文件如下：

<h2>Welcome User!!!</h2>
<form class="container" action="/product">
<div>
<label for="mail"><b>Email-ID: [(ngModel)]</b></label>
<input type="text" placeholder="Enter mail ID" [(ngModel)]="mail" name="mail" required>
<label for="psw"><b>Phone Number</b></label>
<input type="text" placeholder="Enter Phone Number" [(ngModel)]="mail" name="phoneNumber" required>
<button (click)="myFunc()">NEXT</button>
</div>
</form>

我的Typescript文件如下：

import { Component, NgModule, OnInit } from '@angular/core';
import { Router, RouterModule, Routes } from '@angular/router';
import { MyProductPageComponent } from '../my-product-page/my-product-page.component';

@Component({
selector: 'app-my-home-page',
templateUrl: './my-home-page.component.html',
styleUrls: ['./my-home-page.component.css']
})
export class MyHomePageComponent implements OnInit {
phoneNumber = "";
mailID = "";
constructor(private router: Router) {
}
ngOnInit(): void {
}
myFunc() {
localStorage.setItem("phoneNumber", this.phoneNumber);
localStorage.setItem("mail", this.mailID);
this.router.navigate(['/products']);
}
}
const routes: Routes = [
{ path: 'MyProductPageComponent', component: MyProductPageComponent },
]
@NgModule({
imports: [RouterModule.forRoot(routes)],
exports: [RouterModule]
})

我想获取在表格中输入的电话号码和邮件ID，并将其保存在本地存储中。并重定向到下一页。请帮忙。收到此错误：需要声明。

Answer 1

您需要使用ngmodel将值与输入控件绑定，并且您可以在组件中访问该控件。

<h2>Welcome User!!!</h2>
<form class="container" action="/product">
<div>
<label for="mail"><b>Email-ID: </b></label>
<input type="text" [(ngModel)]="mailID" placeholder="Enter mail ID" name="mail" required>
<label for="psw"><b>Phone Number</b></label>
<input type="text" placeholder="Enter Phone Number" name="phoneNumber" [(ngModel)]="phoneNumber" required>
<button (click)="myFunc()">NEXT</button>
</div>
</form>

Answer 2

1. 将变量添加到.ts组件中的电话/邮件

2. 将this用于myFunc()中的变量，以获得变量的值

3. 使用ngModel将变量与用户的输入绑定(在输入上设置ngModel而不是标签(。

4. 在app.module中使用import { NgModule } from '@angular/core';，在组件中使用NOT

请参阅工作代码

<h2>Welcome User!!!</h2>
<form class="container" action="/product">
<div>
<label for="mail"><b>Email-ID:</b></label>
<input type="text" placeholder="Enter mail ID"  [(ngModel)]="mail" name="mail" required>
<label for="psw"><b>Phone Number</b></label>
<input type="text" placeholder="Enter Phone Number" [(ngModel)]="phoneNumber" name="phoneNumber" required>
<button (click)="myFunc()">NEXT</button>
</div>
</form>

phoneNumber = "";
mailID = "";
myFunc() {
localStorage.setItem("phoneNumber", this.phoneNumber);
localStorage.setItem("mail", this.mailID);
}

Answer 3

const routes: Routes = [
{ path: 'MyProductPageComponent', component: MyProductPageComponent },
]
The path variable should not have a component  and you are using router.navigate('/products') 
const routes: Routes = [
{ path: 'products', component: MyProductPageComponent },
]
These variables which are used in the ts should bind with the ngModel used in the template 
phoneNumber = "";
mailID = "";
<h2>Welcome User!!!</h2>
<form class="container" action="/product">
<div>
<label for="mail"><b>Email-ID: </b></label>
<input type="text" placeholder="Enter mail ID" [(ngModel)]="mailID" name="mail" required>
<label for="psw"><b>Phone Number</b></label>
<input type="text" placeholder="Enter Phone Number" [(ngModel)]="phoneNumber" name="phoneNumber" required>
<button (click)="myFunc()">NEXT</button>
</div>
</form>