JavaScript中的规则引擎 [英] Rule Engine in JavaScript

问题描述

JavaScript中是否有任何规则引擎？

Is there any Rule engine in JavaScript?

问题出在这样的背景下：

The question is in this context:

• 考虑一个拥有用户填写的表单。


• 当用户填写每个字段并继续下一个字段时，用JavaScript编写的业务逻辑控制表单元素在页面下方的可见性（和其他属性） 。



• 在表单提交后，服务器端也会应用相同的业务逻辑，尽管是在Java中，以防止在浏览器端发生任何意外/操作。

• Consider a web application having a form that users fill up.
• As a user fills up each field and proceeds to the next, business logic written in JavaScript controls the visibility(and other attributes) of form elements further down the page.

• The same business logic is also applied at the server side after the form gets submitted, albeit, in Java to guard against any mishaps/manipulations at the browser side.

现在，如果我们有一个JSR 94 / Drools / JRules规则引擎可以在Java和JavaScript中执行规则，那会不会很好？有了这样的规则引擎，我可以避免硬编码我的规则，并且我还保留了客户端和服务器端验证的灵活性

Now, Wouldn't it be nice if we have a JSR 94/Drools/JRules like rule engine that would execute rules in both Java and in JavaScript? With such a rule engine, I can avoid hard coding my rules, and I also retain the flexibility of having client-side as well as server-side validation

（PS：我已经尝试过AJAX路线并且看到应用程序响应速度慢很多，因此难以向习惯于手动编码，纯粹的用户销售javascript版本。）

(PS: I've tried the AJAX route and seen that the application becomes a lot less responsive, making it hard to sell to users who've been accustomed to a hand-coded, pure-javascript version.)

推荐答案

JSR-94是一个Java规范，所以我看不出它与它有什么关系浏览器。

JSR-94 is a Java specification, so I don't see what it has to do with the browser.

有Google JSON规则：

There's Google JSON rules:

http://code.google.com/p/jsonrules/

你说你试过AJAX路线。这是指在服务器上运行的规则引擎和用于访问它的异步调用吗？

You said you tried the AJAX route. Does that mean a rules engine running on the server and an asynch call to access it?

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