AngularJS 中的 $scope 与 var [英] $scope vs var in AngularJS

问题描述

我一直在使用 var 和 $scope.varname 并且在 AngularJS 中都可以正常工作.我想知道这两者在功能上是否存在差异，以及使用哪一种的最佳实践是什么?

I've been using var and $scope.varname and both work fine in AngularJS. I was wondering if there was a difference between the two functionally, and what best practice was in which one to use?

推荐答案

是的！$scope 变量绑定到视图，而 var 没有绑定到视图，并且对于它声明的函数是本地的！

Yes! $scope variables bind to the view where as var does not and is local to the function it was declared in!

var x = 3;
$scope.y = 3;

{{x}} - undefined
{{y}} - 3

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