关于[What’s new in Angular 6.1?]的摘要:
Angular 6.1 introduced a new pipe! It allows iterating over a Map or an object, and displaying the keys/values in our templates. Note that it orders the keys: first lexicographically if they are both strings then by their value if they are both numbers then by their boolean value if they are both booleans (false before true). And if the keys have different types, they will be cast to strings and then compared.
原文地址: https://blog.ninja-squad.com/2018/07/26/what-is-new-angular-6.1/