Extjs4.0数据包（Ext.data.package）以及数据模型（Ext.data.model介绍）详解-白红宇

Extjs4.0数据包（Ext.data.package）以及数据模型（Ext.data.model介绍）详解

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发布时间：2019-02-26

本文共 1170 字，大约阅读时间需要 3 分钟。

Extjs 4.0 ????????????

????????????Extjs 4.0 ???????????????????????????????????????????????Extjs 4.0 ????????????????????????????????

1. Extjs 4.0 ????Ext.data.Package???

Extjs 4.0 ?????Ext.data.Package?????????????????????????????????????????

Store???????????????????

Proxy???????????????????

Model????????????????????

Reader????????????????????

Writer??????????????????

????????????????????????????????????????

2. Extjs 4.0 ?????Ext.data.Model?

Extjs 4.0 ??????Ext.data.Model?????????????????????????????????Model ????????

fields????????????????????? String?Number?Date ??

relations???????????????????????

** validations**???????????????????

?? Model??????????????????????????????????

3. ?????????

???????Extjs 4.0 ???????????????????????????????????

ORM ? ORM ????? Model ???????ORM ??????????????????

??????? NoSQL ????????????????????MaxDB?MongoDB ??????? Model ???

????????????????????????????????????

4. Extjs ????????

Extjs 4.0 ??????????????????????

Number????? Number.MAX_SAFE_INTEGER???????????

String????? 255????????????

Date????? Date.now??????????????

????????????????????????????????

???????????????? Extjs 4.0 ??????????????????????????????????????????

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