在angular2 form表单中我们需要了解表单数据绑定、数据验证、数据提交等内容,在下面的示例中并没有实际提交到后台,这部分内容在今后webapi中加以练习。 表单建立 <form (ngSubmit)="onSubmit(planetForm.value)" #planetform="ngForm"> </form> 这里是一个空的表单ngSubmit是一个事件,用于提交数据,数据则是整个f...
1、给form元素加上novalidate="novalidate"; 2、给form元素加上name="theForm",如下: ●给form加上novalidate="novalidate"意味着表单将不再使用HTML5验证特性 ●给form加上name="theForm"意味着表单的名称是theForm。如何使用theForm,比如我们验证表单是否被修改过theForm.$submitted ● 通过ng-submit提交表单 ● ...
import { FormBuilder, FormGroup, Validators } from '@angular/forms'; import { emailMatcher } from './email-matcher'; @Component({ selector: 'signup-form', template: ` <form class="form" novalidate (ngSubmit)="onSubmit(user)" [formGroup]="user"> <label> <span>Full name</span> <in...
Validation Summarywas also recently added to easily show all validation errors that are still active on the form and you can also use 2 ways of dealing with theSubmit and Validationbutton. For more reasons to use it, see the answered question of:Why Use It?
Also, notice that there is asubmittedvariable defined which will tell us if the form has been submitted or not. Initially, this variable will befalse, and on invocation of thesaveUser()method, it becomestrue. If we don’t want validation messages to show before the user submits the form...
同时,在提交表单的时候,ng-submit还会自动阻止浏览器执行默认的POST操作。对于处理其他事件的情况,例如提供非表单提交型的交互,Angular提供了一些事件处理指令,它们类似于浏览器原生的事件属性。对于onclick,可以使用ng-click;对于ondblclick,可以使用ng-dblclick;等等。我们可以试着实现一个这样的功能:再次扩展开始的那个计...
Template-driven submit Template-driven error validation Form base and interface Form base <form novalidate> <label> <span>Full name</span> <input type="text" name="name" placeholder="Your full name"> </label> <div> <label> <span>Email address</span> ...
对于onclick, 你应该使用ng-click. 对于ondblclick你应该使用ng-dblclick等等. 我们可以尝试最后一次扩展我们的计算器启动应用, 使用一个重置按钮用于将输入框的值重置为0. <form ng-submit="requestFunding()" ng-controller="StartUpController"> Starting: <input ng-change="computeNeeded()" ng-model="...
...如果你正在使用表单把输入项组织起来,你可以在form自身上使用ng-submit指令来指定一个函数,当表单提交的时候可以执行这个函数。...对于处理其他事件的情况,例如提供非表单提交型的交互,Angular提供了一些事件处理指令,它们类似于浏览器原生的事件属性。...对于onclick,可以使用ng-click;对于ondblclick,可以使用ng-...
1. Input validation on the backend Although our submit button is disabled as long as we don’t have valid values in our input fields, some clever people will be able to send invalid data to our backend. That’s why we have to double check the incoming data on the server. We have to...