AngularJS 及其对美元变量的使用

Question

有谁知道在 AngularJS 中使用 Dollar 方法和变量背后的原因是否是为了指示 AngularJS 在消化过程中避免检查这些值？那么，如果 Angular 遇到 $scope.$value 和 $scope.value，那么它将避免检查前者，因为它的变量名称中带有美元字符前缀？

Answer 1

这只是以下代码片段中的命名约定 http://docs.angularjs.org/tutorial/step_05

'$' Prefix Naming Convention
You can create your own services, and in fact we will do exactly that in step 11. As a naming convention, angular's built-in services, Scope methods and a few other angular APIs have a '$' prefix in front of the name. Don't use a '$' prefix when naming your services and models, in order to avoid any possible naming collisions.

http://docs.angularjs.org/guide/concepts#angular_namespace

Angular Namespace
To prevent accidental name collision, Angular prefixes names of objects which could potentially collide with $. Please do not use the $ prefix in your code as it may accidentally collide with Angular code.