ng-options how to set first select always blank

Question

I am using angularjs in a project and in which I am using ng-options for generating .

Initially when the pages reload and no option element is selected the html gene

Answer 1

For anyone out there that treat "null" as valid value for one of the options (so imagine that "null" is a value of one of the items in typeOptions in example below), I found that simplest way to make sure that automatically added option is hidden is to use ng-if.

Why ng-if and not ng-hide? Because you want css selectors that would target first option inside above select to target "real" option, not the one that's hidden. It gets useful when you're using protractor for e2e testing and (for whatever reason) you use by.css() to target select options.

Kevin - Sưu Tầm