National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...

Carla Tardi is a technical editor and digital content producer with 25+ years of experience at top-tier investment banks and money-management firms. Thomas J. Brock is a CFA and CPA with more than 20 ...

状态、视图、交互三个角色怎么分工？状态回答的是：页面现在是什么样？视图回答的是：这些状态怎么被用户看到？交互回答的是：用户做了什么，状态要怎么变？ 一、先别急着背概念，状态就是“页面记住的东西” 你点按钮，数字从 0 变成 1；你在输入框里打字，页面记住了你输入的内容；你勾选一个待办事项，列表里那一项变成完成状态。 这些会影响页面展示、并且会随着用户操作变化的数据，就是状态。 我只改状态，Vue ...