wilsonke的专栏

import { asLiteral } from '@angular/compiler/src/render3/view/util';import { Component, OnInit } from '@angular/core';import { FormBuilder,FormControl, FormGroup,ValidationErrors, Validators } from '@angular/forms';import { MatSnackBar } from '@angular.

<mat-form-field class="sv-field" appearance="fill"> <mat-label style="display: inline;">机站</mat-label> <input matInput formControlName="netStatus" placeholder="机站" required > <button mat-icon-button aria-label="Exa...