angular2之ng2-validation学习

<p>最近在使用ng2做前端。发现表单验证这块除了官网上给的示例，验证required。其他的都要自己写逻辑来实现。开发起来不是很方便。所以在网上找了下ng2表单验证的资源，觉得ng2-validation不错。所以做的例子。以便以后使用，也怕时间久了忘脑后去。</p> <p>示例代码链接</p> <ul class=" list-paddingleft-2"><li><p>首先从npm包管理服务器上下载安装。</p></li></ul> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">npm install ng2-validation --save 命令参数--save：使npm包信息保存在package.json文件的dependencies配置集合内。该集合是ng2正式运行的依赖集合。</pre><div class="contentsignin">Salin selepas log masuk</div></div> <ul class=" list-paddingleft-2"><li><p>使用方法</p></li></ul> <p>在模块文件内添加引用，一般为AppModule。</p> <p>app.module.ts文件</p> <div class="cnblogs_code"> <img class="code_img_closed lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/67b3c157e379ac2f5c6a34f8763b2aec-0.gif" id="code_img_closed_e7fcb3a6-23ed-4046-a3f8-f1a29d22220f" alt=""><img class="code_img_opened lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/67b3c157e379ac2f5c6a34f8763b2aec-1.gif" id="code_img_opened_e7fcb3a6-23ed-4046-a3f8-f1a29d22220f" alt=""><div class="cnblogs_code_hide"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">import { NgModule } from '@angular/core';import { BrowserModule } from '@angular/platform-browser';import { FormsModule,ReactiveFormsModule }   from '@angular/forms';import { CustomFormsModule } from 'ng2-validation';import { AppComponent } from './app.component';import { AppTtemplateDrivenComponent } from './app-ttemplate-driven/app-ttemplate-driven.component';import { AppModelDrivenComponent } from './app-model-driven/app-model-driven.component';import { AppRoutingModule } from "app/app-routes.module";import { ValidationConfigModel } from "app/Models/validation"; @NgModule({   declarations: [     AppComponent,     AppTtemplateDrivenComponent,     AppModelDrivenComponent   ],   imports: [     BrowserModule,     FormsModule,     AppRoutingModule,     CustomFormsModule,     ReactiveFormsModule   ],   providers: [ValidationConfigModel],   bootstrap: [AppComponent] }) export class AppModule { }</pre><div class="contentsignin">Salin selepas log masuk</div></div></div> <span class="cnblogs_code_collapse">View Code</span> </div> <p> </p> <div> <div> <p>表单验证的使用方式有两种。可以灵活选择。两者混合使用我没研究。其实使用一种就足够了。</p> <p>模板驱动<span style="font-size: 12px;">（</span><span style="font-size: 12px;">template driven</span><span style="font-size: 12px;">）</span></p> <p><span style="font-size: 12px;">GitHub上例子</span></p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><input type="text" [(ngModel)]="model.field" name="field" #field="ngModel" [rangeLength]="[5, 9]"/> <p *ngIf="field.errors?.rangeLength">error message</p></pre><div class="contentsignin">Salin selepas log masuk</div></div> </div> <div>模型驱动（model driven）</div> <div>GitHub上例子</div> <div> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><</pre><div class="contentsignin">Salin selepas log masuk</div></div><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><span class="pl-ent"><span class="pl-e"><span class="pl-s"><span class="pl-pds"><span class="pl-pds"><span class="pl-e"><span class="pl-s"><span class="pl-pds"><span class="pl-pds"><<span class="pl-ent">p <span style="color: #0000ff;">*</span><span class="pl-e"><span style="color: #0000ff;">ngIf=</span><span class="pl-s"><span class="pl-pds"><span style="color: #0000ff;">"demoForm.from.controls.field.errors?.rangeLength</span><span class="pl-pds"><span style="color: #0000ff;">"</span>>error message</<span class="pl-ent">p><br><span class="pl-k"><span class="pl-k"><span class="pl-en"><span class="pl-k">FormGroup需要在from的dom上添加formGroup驱动，否则验证不生效。<br></span></span></span></span></pre><div class="contentsignin">Salin selepas log masuk</div></div> <div>　　<form<span style="color: #0000ff;"> [formGroup]="formGroup"</span> (ngSubmit)="onSubmit()" #validationForm2="ngForm" ></div> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><span class="pl-k"><span class="pl-k"><span class="pl-en"><span class="pl-k"> 下面是我的demo代码片段：<br>模板驱动app-ttemplate-driven.component.html<br></span></span></span></span></pre><div class="contentsignin">Salin selepas log masuk</div></div> <div class="cnblogs_code"> <img class="code_img_closed lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/67b3c157e379ac2f5c6a34f8763b2aec-2.gif" id="code_img_closed_eb3df7ae-530b-42cb-b181-36930644c712" alt=""><img class="code_img_opened lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/67b3c157e379ac2f5c6a34f8763b2aec-3.gif" id="code_img_opened_eb3df7ae-530b-42cb-b181-36930644c712" alt=""><div class="cnblogs_code_hide"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><div class="container">   <form (ngSubmit)="onSubmit()" #validationForm="ngForm">     <div class="form-group">       <label for="appField">长度要求</label>       <input type="text" required class="form-control" name="appField" [(ngModel)]="model.appField" #rangeLength="ngModel" [rangeLength]="[5, 9]">       <p [hidden]="rangeLength.valid||rangeLength.pristine">长度在5到9之间</p>     </div>     <div class="form-group">       <label for="appField2">长度要求2</label>       <input type="text" class="form-control" name="appField2" [(ngModel)]="model.appField2" #rangeLength2="ngModel" [rangeLength]="[0,5]">       <p [hidden]="rangeLength2.valid||rangeLength2.pristine">长度要求</p>     </div>     <div class="form-group">       <label for="appMin">最小值</label>       <input type="number" class="form-control" name="appMin" [(ngModel)]="model.appMin" #appMin="ngModel" [min]="10" />      <p [hidden]="appMin.valid||appMin.pristine">取值大于等于10</p>     </div>    <div class="form-group">      <label for="appGt">大于</label>      <input type="number" class="form-control" name="appGt" [(ngModel)]="model.appGt" #appGt="ngModel" [gt]="10" />      <p [hidden]="appGt.valid||appGt.pristine">取值大于10</p>    </div>    <div class="form-group">      <label for="appGte">大于等于</label>      <input type="number" class="form-control" name="appGte" [(ngModel)]="model.appGte" #appGte="ngModel" [gte]="10" />      <p [hidden]="appGte.valid||appGte.pristine">取值大于等于10</p>    </div>    <div class="form-group">      <label for="appMax">最大值</label>      <input type="number" class="form-control" name="appMax" [(ngModel)]="model.appMax" #appMax="ngModel" [max]="10" />      <p [hidden]="appMax.valid||appMax.pristine">最小值10</p>    </div>     <div class="form-group">      <label for="appLt">小于</label>      <input type="number" class="form-control" name="appLt" [(ngModel)]="model.appLt" #appLt="ngModel" [lt]="10" />      <p [hidden]="appLt.valid||appLt.pristine">值小于10</p>    </div>    <div class="form-group">      <label for="appLte">小于等于</label>      <input type="number" class="form-control" name="appLte" [(ngModel)]="model.appLte" #appLte="ngModel" [lte]="10" />      <p [hidden]="appLte.valid||appLte.pristine">值小于等于10</p>    </div>    <div class="form-group">      <label for="appRange">取值范围</label>      <input type="number" class="form-control" name="appRange" [(ngModel)]="model.appRange" #appRange="ngModel" [range]="[10, 20]" />      <p [hidden]="appRange.valid||appRange.pristine">取值大于等于10到小于等于20</p>    </div>    <div class="form-group">      <label for="appDigits">数字</label>      <input type="text" class="form-control" name="appDigits" [(ngModel)]="model.appDigits" #appDigits="ngModel" digits />      <p [hidden]="appDigits.valid||appDigits.pristine">必须是uint</p>    </div>    <div class="form-group">      <label for="appNumber">数字</label>      <input type="text" class="form-control" name="appNumber" [(ngModel)]="model.appNumber" #appNumber="ngModel" number />      <p [hidden]="appNumber.valid||appNumber.pristine">任何数字</p>    </div>    <div class="form-group">      <label for="appUrl">链接</label>      <input type="text" class="form-control" name="appUrl" [(ngModel)]="model.appUrl" #appUrl="ngModel" url />      <p [hidden]="appUrl.valid||appUrl.pristine">合法的url</p>    </div>     <div class="form-group">      <label for="appEmail">邮箱</label>      <input type="text" class="form-control" name="appEmail" [(ngModel)]="model.appEmail" #appEmail="ngModel" email />      <p [hidden]="appEmail.valid||appEmail.pristine">合法的邮箱地址</p>    </div>    <div class="form-group">      <label for="appDate">日期</label>      <input type="text" class="form-control" name="appDate" [(ngModel)]="model.appDate" #appDate="ngModel" date />      <p [hidden]="appDate.valid||appDate.pristine">合法的日期</p>    </div>    <div class="form-group">      <label for="appUuid">uuid</label>      <input type="text" class="form-control" name="appUuid" [(ngModel)]="model.appUuid" #appUuid="ngModel" uuid="'all'" />      <p [hidden]="appUuid.valid||appUuid.pristine">不是合法的uuid</p>    </div>    <div class="form-group">      <label for="appPhone">电话</label>      <input type="text" class="form-control" name="appPhone" [(ngModel)]="model.appPhone" #appPhone="ngModel" phone="CN" />      <p [hidden]="appPhone.valid||appPhone.pristine">不是合法的电话号码</p>    </div>    <div class="form-group">      <label >两次相同</label>      <input class="form-control" type="password" ngModel name="appPassword" #appPassword="ngModel" required/>      <p [hidden]="appPassword.valid||appPassword.pristine">必填项</p>      <input class="form-control" type="password" ngModel name="appCertainPassword" #appCertainPassword="ngModel" [equalTo]="appPassword"/>      <p [hidden]="appCertainPassword.valid||appCertainPassword.pristine">两次输入不一致</p>    </div>    <div class="form-group">      <label for="appEqual">相同</label>      <input type="text" class="form-control" name="appEqual" [(ngModel)]="model.appEqual" #appEqual="ngModel" [equal]="'哈哈'" />      <p [hidden]="appEqual.valid||appEqual.pristine">与值不相符</p>    </div>     <div class="form-group">      <label for="appComplex">复合条件</label>      <input type="number" class="form-control" name="appComplex" [(ngModel)]="model.appComplex" #appComplex="ngModel" [gte]="5" [max]="10" />      <p [hidden]="appComplex.valid||appComplex.pristine">大于等于5，最大是10</p>    </div>     <button type="submit" [disabled]="!validationForm.form.valid" class="btn btn-default">Submit</button>   </form> </div></pre><div class="contentsignin">Salin selepas log masuk</div></div></div> <span class="cnblogs_code_collapse">View Code</span> </div> <p> </p> <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"> <br></pre><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div> <p>ts文件不需要做什么，所以就不贴了。</p> <p>模型驱动<br>app-model-driven.component.ts</p> <div class="cnblogs_code"> <img class="code_img_closed lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/762fd55d42b9b4a0f5787e5afdc09e25-4.gif" id="code_img_closed_33ac0536-ba8b-43bc-b9ca-085c96fef74a" alt=""><img class="code_img_opened lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/762fd55d42b9b4a0f5787e5afdc09e25-5.gif" id="code_img_opened_33ac0536-ba8b-43bc-b9ca-085c96fef74a" alt=""><div class="cnblogs_code_hide"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">import { Component, OnInit } from '@angular/core';import { FormGroup, FormControl, Validators } from "@angular/forms";import { CustomValidators } from 'ng2-validation'; @Component({   selector: 'app-app-model-driven',   templateUrl: './app-model-driven.component.html',   styleUrls: ['./app-model-driven.component.css'] }) export class AppModelDrivenComponent implements OnInit {public formGroup: FormGroup; password:string="";   constructor() {      let password = new FormControl('', [Validators.required]);   let certainPassword = new FormControl('', CustomValidators.equalTo(password));this.formGroup = new FormGroup({             field: new FormControl('',  CustomValidators.rangeLength([5, 9])),             appGt:new FormControl('', CustomValidators.gt(10)),             password:password,             certainPassword:certainPassword,             maxField:new FormControl('',[CustomValidators.gt(10),CustomValidators.max(20)])         });   }   ngOnInit() {   } onSubmit(){} }</pre><div class="contentsignin">Salin selepas log masuk</div></div></div> <span class="cnblogs_code_collapse">View Code</span> </div> <p>app-model-driven.component.html</p> <div class="cnblogs_code"> <img class="code_img_closed lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/762fd55d42b9b4a0f5787e5afdc09e25-6.gif" id="code_img_closed_c88f6dec-3c23-45e4-b7de-6a61f7c64f3b" alt=""><img class="code_img_opened lazy" src="/static/imghw/default1.png" data-src="https://img.php.cn/upload/article/000/000/001/762fd55d42b9b4a0f5787e5afdc09e25-7.gif" id="code_img_opened_c88f6dec-3c23-45e4-b7de-6a61f7c64f3b" alt=""><div class="cnblogs_code_hide"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"><div class="container">   <form [formGroup]="formGroup" (ngSubmit)="onSubmit()" #validationForm2="ngForm" >     <div class="form-group" >       <input class="form-control" name="field" type="text" formControlName="field"/>       <p *ngIf="validationForm2.form.controls.field.errors?.rangeLength">长度在5到9之间</p>       <p>{{validationForm2.form.controls.field.errors?.rangeLength}}</p>     </div>    <div class="form-group" >       <input class="form-control" name="appGt" type="number" formControlName="appGt"/>       <p *ngIf="validationForm2.form.controls.appGt.errors?.gt">大于10</p>     </div>     <div class="form-group" >       <input class="form-control" name="password" type="password" [(ngModel)]="password" formControlName="password"/>       <p *ngIf="validationForm2.form.controls.password.errors?.required">必填</p>       <p>{{test.pristine}}</p>       <input class="form-control" type="password" formControlName="certainPassword"/>       <p *ngIf="validationForm2.form.controls.certainPassword.errors?.equalTo">两次相同</p>     </div>     <div class="form-group" >       <label for="appMin">组合形式</label>       <input type="number" class="form-control" name="appMin" formControlName="maxField" />      <p [hidden]="!validationForm2.form.controls.maxField.errors?.max &&!validationForm2.form.controls.maxField.errors?.gt">取值大于等于10且小于20</p>     </div>     <button type="submit" [disabled]="!validationForm2.form.valid" class="btn btn-default">Submit</button>   </form> </div></pre><div class="contentsignin">Salin selepas log masuk</div></div></div> <span class="cnblogs_code_collapse">View Code</span> </div> <p> </p> <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"> <br></pre><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div> <div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false"> <br></pre><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div><div class="contentsignin">Salin selepas log masuk</div></div> </div> </div> <p> </p> <p> </p> <div> </div>

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