How to apply Multiple ng-pattern with or condition in input box

Question

Condition first: /^([a-zA-Z]{5})(\\d{4})([a-zA-Z]{1})$/; Condition second : (/^([a-zA-Z]){4}([0-9]){5}([a-zA-Z]){1}?$/g)

html

 <input type="text" ng-model="userDetail.id" name="uid" required="" ng-pattern="regx"  />


Angular 
scope.regx= Condition first or condition Second

scope.regx=/^([a-zA-Z]{5})(\d{4})([a-zA-Z]{1})$/ || /^([a-zA-Z]){4}([0-9]){5}([a-zA-Z]){1}?$/g;  not working 

Answer 1

This will work in your case.

/(?:(?=(^[a-zA-Z]{5}\d{4}[a-zA-Z]{1}$))|(?=(^[a-zA-Z]{4}[0-9]{5}[a-zA-Z]{1}?$)))/g

Explaination: -