formRegister=newFormGroup({ username:newFormControl('newUser'), password:newFormControl(''), }); constructor() { } ngOnInit():void{ } fcUpdateName() {this.fcName.setValue('formControl 上的setValue() 方法更新表单项~'); } handleSubmit() {} } FormBuilder当需要与多个表单打交道时 组件...
import { FormBuilder, FormGroup, FormControl } from'@angular/forms';import { debounceTime } from'rxjs/operators';@Component({ ... })exportclassMyFormComponent {myForm: FormGroup;constructor(private fb: FormBuilder) {this.myForm = this.fb.group({searchText: newFormControl('') });this....
首先,我们需要从表单中提取 `FormControl` 用户名,这可以通过在 `FormGroup` 上使用 `get()` 属性来实现。 import { AbstractControl, FormBuilder, FormGroup, Validators, } from '@angular/forms'; // 获取 'username' 字段 const usernameControl = this.signUpForm.get('username') as AbstractControl; ...
在上面的例子中,点击"Fill Form"按钮时,表单将被填充为预定义的rowData对象中的值。 这种方法适用于编辑表单时使用表行数据填充表单。您可以根据实际需求修改表单模型和填充数据的逻辑。 对于更复杂的表单,您还可以使用FormBuilder来简化表单的创建和填充过程。
Using FormBuilder API can simply our code, for example we want to refactor following code by using FormBuilder: First thing we need to do is actually
const validator = abstractControl.validator({} as AbstractControl); if (validator && validator.required) { console.log(validator); return true; } } return false; } }Compiling application & starting dev server…angular-10-formbuilder-example-m8qjq8.stackblitz.io Console Clear on reload...
首先,你需要在组件类中使用FormGroup、FormControl和FormBuilder来创建表单模型: // 在组件类中 import { Component } from '@angular/core'; import { FormBuilder, FormGroup, Validators } from '@angular/forms'; @Component({ selector: 'app-login-form-reactive', ...
Using FormBuilder API can simply our code, for example we want to refactor following code by using FormBuilder: form =newFormGroup({ store:newFormGroup({ branch:newFormControl(''), code:newFormControl('') }), selector:this.createStock({}), ...
(private formBuilder: FormBuilder) { this.form = formBuilder.group({ firstName: ['', Validators.required], lastName: ['', Validators.required] }); } hasFieldError(fieldName: string): boolean { return this.form.controls[fieldName].invalid && (this.submitted || this.form.controls[field...
exportclassSampleFormComponent{// ...publicform: FormGroup;constructor(privatefb: FormBuilder){this.form =this.fb.group({timePicker: ['', Validators.required] }); } }typescript Projecting components The time picker component allows projecting child components - the same as in theIgxInputGroupCom...