import { Directive, forwardRef, Attribute } from '@angular/core';
import { NG_VALIDATORS,Validator,Validators,AbstractControl,ValidatorFn } from '@angular/forms';
@Directive({
selector: '[checkPattern][formControlName],[checkPattern][formControl],[checkPattern][ngModel]',
providers: [
{ provide: NG_VALIDATORS, useExisting: forwardRef(() => PatternValidator), multi: true }
]
})
export class PatternValidator implements Validator {
constructor() {}
validate(c:AbstractControl): { [key: string]: any } {
// self val
let obj:any ={};
let number:RegExp=new RegExp("/[0-9]/g")
let capital:RegExp=new RegExp("/[A-Z]/g")
let letter:RegExp=new RegExp("/[a-z]/g")
if(!number.test(c.value))
{
obj.patternNumber=true;
}
else
if(obj.patternNumber)
delete obj.patternNumber
if(!capital.test(c.value))
{
obj.patternCapital=true;
}
else
if(obj.patternCapital)
delete obj.patternCapital
if(!letter.test(c.value))
{
obj.patternLetter=true;
}
else
if(obj.patternLetter)
delete obj.patternLetter
return obj;
密码可以:1WWRT密码不能:1wwwrt,11111,wwww,wwwww{密码应至少具有一个大写,一个小写,一个数字和至少8个字符。不仅允许大写,下盘和数字
此正则表达式至少具有一个大写,一个小写和一个数字。
。 ^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[0-9]).{8,}$
我使用了其他字符而不是数字
<mat-form-field class="input-row">
<input matInput formControlName="password" type="password" placeholder="{{ 'Password' | translate }}" required pattern="^(?=.*?[A-Z])(?=.*?[a-z])(?=.*?[#?!@$%^&*-]).{8,}$">
<mat-error>{{'Doesn't match password criteria' | translate}}</mat-error>
</mat-form-field>