Angular 使用指令模糊和加载时表单上的数字格式,此外,不应格式化 formControl 数据
Angular number format on forms on blur and on load by using directive, Also the formControl data should not be formatted
我正在尝试对表单输入字段进行数字格式化,其中的数字应该在加载和模糊时进行格式化。专注于该字段,我会将其转换为普通文本。表单组中的值也不应格式化。
App.html
<div>
<form [formGroup]='rForm' (ngSubmit)= "addPost(rForm.value)">
<div class="form-container" >
<div class="row columns" >
<h1>My Reactive form</h1>
<label>Name
<input type="text" formControlName="name" appDecimalFormat >
</label>
<label>Description
<textarea formControlName="description"></textarea>
</label>
<label for="validate">Minimum of 3 characters</label>
<input type="checkbox" name="validate" formControlName="validate" value="1">On
<input type="submit" class="button expnded" value="Submit Form" [disabled]="!rForm.valid">
</div>
</div>
</form>
</div>
<ng-template #forminfo>
<div class="form-container">
<div class="row columns">
<h1>{{name}}</h1>
<p>{{ description }}</p>
<input type="button" (click)=""
</div>
</div>
</ng-template>
app.ts
import { Component } from '@angular/core';
import { FormGroup, FormBuilder, Validators } from "@angular/forms";
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
rForm: FormGroup;
post:any;
description:any;
name:any;
constructor(private fb:FormBuilder){
this.rForm = fb.group({
'name':[null, Validators.required],
'description':[null, Validators.compose([Validators.required,Validators.minLength(3),Validators.maxLength(5)])],
'validate' :'',
})
}
addPost(post){
this.description = post.description;
this.name = post.name;
}
}
数字格式-directive.ts
我正在使用这个指令来格式化数字,请帮我解决这个问题。
import { Directive, HostListener, HostBinding, Renderer2, ElementRef } from '@angular/core';
import {DecimalPipe} from '@angular/common';
@Directive({
selector: '[appDecimalFormat]'
})
export class DecimalFormatDirective {
constructor(private decimalPipe: DecimalPipe, private renderer: Renderer2, private el: ElementRef) {
}
@HostListener('focus') onFocus($event){
console.log(event.target.value)
this.backgroundColor = 'silver';
this.renderer.setAttribute(this.el.nativeElement,'input', this.decimalPipe.transform(event.target.value));
}
@HostListener('blur') onBlur($event){
console.log(event.target.value)
this.backgroundColor = 'white';
console.log(this.decimalPipe.transform(event.target.value));
this.renderer.setAttribute(this.el.nativeElement,'input', this.decimalPipe.transform(event.target.value));
}
@HostBinding('style.background-color') get setColor(){
return this.backgroundColor;
}
private backgroundColor = 'white';
}
注入管道不是一件好事。相反,您可以使用从 @angular/common 包中导出的函数。例如,可以使用 use formatNumber。 more
您可以将值设置回输入框,如下所示
this.el.value = formatNumber(num);
formatNumber() 是从@angular/common 包导出的 fn。
我正在尝试对表单输入字段进行数字格式化,其中的数字应该在加载和模糊时进行格式化。专注于该字段,我会将其转换为普通文本。表单组中的值也不应格式化。
App.html
<div>
<form [formGroup]='rForm' (ngSubmit)= "addPost(rForm.value)">
<div class="form-container" >
<div class="row columns" >
<h1>My Reactive form</h1>
<label>Name
<input type="text" formControlName="name" appDecimalFormat >
</label>
<label>Description
<textarea formControlName="description"></textarea>
</label>
<label for="validate">Minimum of 3 characters</label>
<input type="checkbox" name="validate" formControlName="validate" value="1">On
<input type="submit" class="button expnded" value="Submit Form" [disabled]="!rForm.valid">
</div>
</div>
</form>
</div>
<ng-template #forminfo>
<div class="form-container">
<div class="row columns">
<h1>{{name}}</h1>
<p>{{ description }}</p>
<input type="button" (click)=""
</div>
</div>
</ng-template>
app.ts
import { Component } from '@angular/core';
import { FormGroup, FormBuilder, Validators } from "@angular/forms";
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
rForm: FormGroup;
post:any;
description:any;
name:any;
constructor(private fb:FormBuilder){
this.rForm = fb.group({
'name':[null, Validators.required],
'description':[null, Validators.compose([Validators.required,Validators.minLength(3),Validators.maxLength(5)])],
'validate' :'',
})
}
addPost(post){
this.description = post.description;
this.name = post.name;
}
}
数字格式-directive.ts
我正在使用这个指令来格式化数字,请帮我解决这个问题。
import { Directive, HostListener, HostBinding, Renderer2, ElementRef } from '@angular/core';
import {DecimalPipe} from '@angular/common';
@Directive({
selector: '[appDecimalFormat]'
})
export class DecimalFormatDirective {
constructor(private decimalPipe: DecimalPipe, private renderer: Renderer2, private el: ElementRef) {
}
@HostListener('focus') onFocus($event){
console.log(event.target.value)
this.backgroundColor = 'silver';
this.renderer.setAttribute(this.el.nativeElement,'input', this.decimalPipe.transform(event.target.value));
}
@HostListener('blur') onBlur($event){
console.log(event.target.value)
this.backgroundColor = 'white';
console.log(this.decimalPipe.transform(event.target.value));
this.renderer.setAttribute(this.el.nativeElement,'input', this.decimalPipe.transform(event.target.value));
}
@HostBinding('style.background-color') get setColor(){
return this.backgroundColor;
}
private backgroundColor = 'white';
}
注入管道不是一件好事。相反,您可以使用从 @angular/common 包中导出的函数。例如,可以使用 use formatNumber。 more
您可以将值设置回输入框,如下所示
this.el.value = formatNumber(num);
formatNumber() 是从@angular/common 包导出的 fn。