Learn how to create a custom validator to check whether passwords match. <h1>password match</h1> <form novalidate autocomplete="off" [formGroup]="signupForm"> <div class="form-field"> <label>Pass…

C#实现的Check Password,并根据输错密码的次数分情况锁定账户:如果输入错误3次,登录账户锁定5分钟并提示X点X分后重试登录.如果5分钟后再次输入,累计输入错误密码累计达到5次.则账户会被永久锁定,需联系系统管理员进行把数据库中的输入错误的次数(errorcount)进行清零解锁才能登陆.实现代码如下: public class UserInfo1 { public string Error_count { get; set; } public string Error_time {…

效果如图: 扩展源码: //扩展 //密码按钮扩展 //支持在密码与非密码之间切换 Ext.define('ux.form.field.Password', { extend: 'Ext.form.field.Text', xtype: 'passFile', requires: ['Ext.form.trigger.Component'], //禁止自动填充 autoComplete: 'off', inputType: 'password', //自定义样式 cls: 'password',…

//switch-control component import { Component } from '@angular/core'; import { ControlValueAccessor, NG_VALUE_ACCESSOR, NG_VALIDATORS, Validators} from '@angular/forms'; @Component({ selector: 'switch-control', templateUrl: './switch-control.componen…

We can nest formGorup: this.reactiveForm = fb.group({ username: [ '', [ Validators.required, Validators.minLength() ] ], pwds: fb.group({ pwd: '', rpwd: '' }, {validator: passwordValidator}) }); We make password as an own group. So in html, we need t…

Using Radio Buttons in Angular 2 requires a basic understanding of forms as well as how their labels will match up with each input. This lesson shows how to use *ngFor with radio buttons and covers the quirks of the id property and forattributes as w…

Angular 2 forms provide RxJS streams for you to work with the data and validity as it flows out of the forms. These streams allow you handle complex scenarios and asynchronous scenarios with relative ease. This example shows you how to log out the va…

Angular 2’s ngModel exposes more than just validity, it even gives you the states of whether the input has been “touched” or changed. This lesson explains and compares those states so you can use them to make complex validity requirements. <form name…

The ngModelGroup directive allows you to group together related inputs so that you structure the object represented by the form in a useful and predictable way. ngModelGroup is often used in combination with fieldset as they mostly represent the same…

Forms in Angular 2 are essentially wrappers around inputs that group the input values together into an object and also check that all the inputs are valid. Angular 2 ‘sngForm allows you to get a reference to that object and validity and use them to d…