.ng-valid[required].ng-dirty:not(form),.ng-valid.required.ng-dirty:not(form) { border-left: 5px solid #42A948;}.ng-valid[required].ng-pristine:not(form),.ng-
定义:<input>元素带有一些HTML验证属性:required、minlength、maxlength和pattern:#starttimeClass="ngModel"把NgModel导出成了一个名叫starttimeClass的局部变量。NgModel把自己控制的FormControl实例的属性映射出去,让我们能在模板中检查控件的状态,比如valid和dirty。<inp
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