Note that migration projects may require a developer skilled in both Angular and AngularJS; you may want to consult additional Angular resources in these cases.
因此, 如果你正在寻找AngularJS工程师来维护现有的应用, 你需要有AngularJS经验的候选人,而不是Angular开发者.e.(那些只精通Angular 2+的). However, 如果你打算把你的AngularJS应用迁移到Angular, 你可能需要一个精通所有版本AngularJS/Angular的工程师. You should screen a candidate for both AngularJS and Angular expertise; you may wish to consult our Angular程序员招聘指南 对于其他开发人员需求.
目标是精通AngularJS和Angular的工程师,并且擅长编写模块化, 可维护的代码. Look for senior migration experts; candidates should have experience using the Angular ngUpgrade library 并开发紧跟潮流的web应用程序 AngularJS风格指南.
Directive – Applies behavior to HTML elements in a reusable manner; these are the equivalent of components in Angular or React.
Scope -存储指令和其他元素访问的应用值(应用模型).
控制器 – Controls application data and behavior using the scope; a controller is a JavaScript object defined by an ng-controller directive.
Injector – Retrieves object instances and acts as the dependency injection container; AngularJS apps have a single injector that looks up instances by name.
Service – Consists of reusable business logic not specific to a view for use across an application; service factory functions can define HTTP interceptors for use in RESTful API calls (e.g.,全局错误处理或其他请求预处理或响应后处理).
The digest method compares scope models to their previous values; it processes watchers on a scope. 摘要方法将继续执行,直到不再触发监视器侦听器为止. 由于这个功能, 有可能陷入无限消化循环, 开发人员在使用多个观察者时应该小心.
The digest method is typically not called directly; developers should use the “apply” method, 哪个调用摘要方法. However, 例如,特定场景可能需要调用摘要方法, 工程师在进行单元测试时可能会这样做.
与DOM相关的常见性能优化调整是什么?
在AngularJS中禁用调试数据会阻止通过DOM访问作用域. The debugInfoEnabled 默认设置为true. 尽管像Protractor(用于测试)这样的工具可能需要访问调试信息, 您可以在生产环境中更新设置并将其设置为“false”以获得最佳性能.
在AngularJS中路由是如何工作的?
路由在AngularJS中是通过 ngRoute 模块或外部项目,如 the ui-router library. 候选人应该意识到这一点 the ngComponentRouter 模块已弃用; an answer that only mentions this module may be a yellow flag that the developer is not staying up to date on current AngularJS最佳实践.
Identifying the high-level AngularJS candidate profiles and detailed technical proficiencies that drive business growth is crucial; it empowers you with knowledge of how to hire AngularJS developers suited for two essential advanced web development needs.