How to give regex pattern in scope of angular js

Question

I have an input field which looks like

 <input class="inputMargin urlInputWidth" type="text" size="40" name="url" ng-model="user.customerId" maxlength="250" ng-pattern="/sftp://.+/" />

It works fine and shows validation as expected. I just wanted to move this pattern to scope of angularjs to get a much neater form. I have tried with this syntax: $scope.sftpValidate="/sftp://.+/"; and ng-pattern="sftpValidate". But this is not validating the pattern at all. i have tried to give as $scope.sftpValidate=/sftp://.+/; and $scope.sftpValidate=sftp://.+;. But these are showing syntax errors. Where am i missing?

Answer 1

Please see JSBin

View:

<input class="inputMargin urlInputWidth" type="text" size="40" name="url" ng-model="user.customerId" maxlength="250" ng-pattern="regex " />

JS

$scope.regex = /sftp://.+/;

JS UPDATED BY sms:

$scope.regex = /sftp:\/\/.+/;