填写所有字段后的事件

Question

我有4个输入和1个禁用的按钮

<input type="text">
<input type="text">
<input type="text">
<input type="text">
<input type="button" disabled="true">

如何在填写所有字段后从按钮中删除属性。关于输入和改变的其他事件。

Answer 1

使用离子验证

https://ionicframework.com/docs/developer-resources/forms/

查找此行及其示例：

<button ion-button type="submit" [disabled]="!todo.valid">Submit</button>

Answer 2

您可以使用FormGroups

来完成此操作

  

app.component.html

     <form [formGroup]="mygroup" >

           <input type="text" formControlName="input1">
           <input type="text" formControlName="input2">
           <input type="text" formControlName="input3">
           <input type="text" formControlName="input4">

           <input type="button" disabled="true" type="submit" [disabled]="!mygroup.valid">
        </form>

  

app.component.ts

import { Component } from '@angular/core';
import {Validators, FormBuilder, FormGroup } from '@angular/forms';


export class FormsPage {
  private mygroup : FormGroup;

  constructor( private formBuilder: FormBuilder ) {
    this. mygroup = this.formBuilder.group({
      input1: ['', Validators.required],
      input2: ['', Validators.required],
      input3: ['', Validators.required],
      input4: ['', Validators.required],
    });
  }

}