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微信小程序API是什么?能实现什么功能? - 小程序资讯 - 上线了sxl.cn微信小程序API(Application Programming Interface),即应用程序编程接口。API是一种接口函数,把函数封装起来,给开发者,这样好多的功能就不需要你去实现了,只要会调用就好了。
小程序开发框架提供丰富的微信小程序api接口,可以方便的调起微信提供的能力,如获取用户信息,本地存储,支付功能等。通常,在小程序 API 有以下几种类型:
1.事件监听 API
以 on 开头的 API 用来监听某个事件是否触发,如:wx.onSocketOpen,wx.onCompassChange 等。
这类 API 接受一个回调函数作为参数,当事件触发时会调用这个回调函数,并将相关数据以参数形式传入。
2.同步 API
我们约定,以 Sync 结尾的 API 都是同步 API, 如 wx.setStorageSync,wx.getSystemInfoSync 等。此外,也有一些其他的同步 API,如 wx.createWorker,wx.getBackgroundAudioManager 等,详情参见 API 文档中的说明。
同步 API 的执行结果可以通过函数返回值直接获取,如果执行出错会抛出异常。
3.异步 API
大多数 API 都是异步 API,如 wx.request,wx.login 等。这类 API 接口通常都接受一个 Object 类型的参数,这个参数都支持按需指定以下字段来接收接口调用结果:
Object 参数说明:
回调函数的参数
success,fail,complete 函数调用时会传入一个 Object 类型参数,包含以下字段:
异步 API 的执行结果需要通过 Object 类型的参数中传入的对应回调函数获取。部分异步 API 也会有返回值,可以用来实现更丰富的功能,如 wx.request,wx.connectSocket 等。
利用小程序API能够实现网络请求功能、顶部Banner功能、底部导航功能、数据交互功能、展示功能等功能。下面跟大家简单介绍几个:
1.网络请求功能
通过网络接口获取数据需要用到网络请求,可以利用js实现。微信提供了网络方面的接口,可以通过API-网络-网络请求。通过这个接口可以进行网络数据请求。
2.底部导航功能
底部导航功能可以通过tabBar属性得以实现。
3.顶部Banner功能
顶部Banner功能可以在swiper组件中实现,可以通过组件-视图容器-swiper找到文档,然后复制到官方。
以上就是关于微信小程序api开发相关知识的科普,关于微信小程序api教程你可以参考微信小程序api文档,学习更多。如果还想了解关于小程序的知识,你可以关注上线了公众号(sxl-cn)。「上线了」https://www.sxl.cn/是一个专注自助建站与小程序开发的SaaS平台,针对众多行业提供多套小程序模板,帮助没有技术和设计基础的商家和创业者,通过上线了一键生成小程序!
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