JavaScript

ant D源码中form组件只对是react-component form的一层封装

首先表单是双向绑定的

双向绑定,廖雪峰老师是这样解释的

form在react中是怎么实现数据的双向绑定的?

在react中我们可以手动去绑定input框的值为一个state中的值,然后每次onchange时去更新state

刚看到createBaseForm.js的源码时,我猜测,reactForm也是这样实现的

默认的触发器就是onchange,再来看实现流程是怎么样的

createBaseForm返回一个高阶函数decorate

这里采用es5的类写法,getInitialState相当于Es6 Class中的constructor部分,在生成一个表单实例时就会有一个fieldsStore对象,通读全文后发现,很多复杂操都是在对这个全局store进行维护

getFieldDecorator是一个高阶函数,将传入的组件封装后返回

  • 核心部分onChange的封装

在onCollect部分先通过onCollectCommon实现了原action也就是onChange的执行,再setFields更新当前表单的值

更新store后,强制刷新

这里已经能够大概知道form内部是怎么运作的了,我画了一张流程图

根据原理做了一个简单的demo

  • npm

https://www.npmjs.com/package/zjx-react-form

  • 码云

https://gitee.com/onezilc/my-react-form.git

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