NgCaptcha

A pure front-end angular captcha module.

中文文档

Usage

Installation

npm install --save ng-captcha

Import module

app.module.ts

import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from "@angular/forms";

import { CaptchaModule } from 'ng-captcha';

import { AppComponent } from './app.component';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    CaptchaModule
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

Basic

app.component.html

<input [(ngModel)]="inputCode">
<captcha width="200" height="70" (generateCode)="onGenerateCode($event)"></captcha>
<button (click)="verify()">Verify</button>

app.component.ts

import { Component } from '@angular/core';

@Component({
  selector: 'app-root',
  templateUrl: './app.component.html',
  styleUrls: ['./app.component.css']
})
export class AppComponent {

  code
  inputCode

  onGenerateCode(code) {
    this.code = code
  }

  verify() {
    if (this.code === this.inputCode) {
      alert('Verify success')
    } else {
      alert('Verify faild')
      this.inputCode = undefined
    }
  }
}

API

Property | Description | Type | Default --- | --- | --- | --- width | Captcha Width | number | 100 height | Captcha height | number | 50 (generateCode) | The callback function that is triggered when the captcha changes, when component init or click can trigger. | EventEmitter<string> | -