How to verify the enter key in the input box in angular1.x? Prevent verification from reporting errors?

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<textarea ng-model="mailInfo.messageContent" rows="10" 
    class="form-control" placeholder="1 ~ 2000" 
    style="border-radius:3px!important" required  
    ng-pattern="/^.{1,2000}$/" 
    ng-pattern-err-type="1 ~ 2000"> 
</textarea>

Validate angularjs

Mar.23,2021

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