What is meaning of gettext('Some Text') in Openstack

Question

What is meaning of gettext('Some text are written')?. I am using openstack, there they have use gettext(), please see the following link openstack on github

I want to know meaning of it, if they are assigning the text to the variable why they didn't use just assignment opearator

$scope.label = {
  title: gettext('Instance Details'),
  instanceName: gettext('Instance Name'),
  availabilityZone: gettext('Availability Zone'),
  instance_count: gettext('Count'),
};

Answer 1

It's probably related to localization. Function gettext is looking for translation of provided arguments and display them in selected locale.

As an example of translation service in angular, check https://angular-translate.github.io/