hao wang thinks this is interesting: The nglf directive could be used in the same way as the ngShow directive; however, while the ngShow directive just deals with the visibility of the element, the ngIf directive prevents the rendering of an element in our template. From Using AngularJS built-in directives from AngularJS Essentials by Rodrigo Branas Publisher: Packt Publishing Released: August 2014 Note ngIf 指令 Share this highlight http://www.safaribooksonline.com/a/angularjs-essentials/30541/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Learn about Safari for Business Have an account? Sign in. Minimise Unlock the rest of AngularJS Essentials and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.