javascript - Angular ng-if="" with multiple arguments -

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i trying started on angular development. , after reviewing documentation questions persist. how best write ng-if multiple arguments corresponding

if( && b) or if( || b )

it possible. 

<span ng-if="checked && checked2">   i'm removed when checkbox unchecked. </span>

http://plnkr.co/edit/uknoaajx5kg3j7aswhlv?p=preview


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