Forgive me if this is super simple, but I googled and googled and couldn't find a good example. I'm not that great with regex and just need to valid that an input has more than 1 character (ie is not blank). I'm using Angular ng-pattern.
<input type="text" ng-model="username" ng-pattern="/regex/">
I need to verify that there as something in the input (not empty). I've used a couple of example, but the issue is once you clear the input, angular is still seeing the pattern as valid. I need it to fail once the input is empty again, but not on first load. As always all help is much appreciated.
EDIT: I basically need a regex that will verify the field is not blank. Here is a plnkr
You can just use required
for that:
<input type="text" ng-model="username" name="username" required>
See this pluckr fork: http://plnkr.co/edit/VwY1WPdCocKHwww69ZSj?p=preview
More in the docs: http://docs.angularjs.org/api/ng.directive:input#usage_parameters
If you REALLY want to use ng-pattern
you should add start/end of input ( ^
and $
):
<input type="text" ng-model="username" ng-pattern="/^$/">
But remember, this will validate a blank input (the input value matches the pattern).
使用/.+/
( .
表示所有可能的字符(换行符除外, +
表示至少一次)
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