角度4中的空格

Question

Pattern that doesn't allow whitespace at the begining. Please find the code below :

<input class="mdl-textfield__input inputMaterial"  maxlength="100" 
[(ngModel)]="getEmpName[i]" (keydown)="onKeyPress($event)" pattern="[a-zA-Z 
]*" appFloatLabelDirective="" formControlName="employer_name">

Answer 1

You can take a look at the angular input-mask plugin for this kind of problem : https://github.com/assisrafael/angular-input-masks

It allows you to filter inputs, and create custom directives

Answer 2

^ [^-\\ s] [\\ w \\ s-] + $-这种模式帮助了我。