如何将Javascript中的JQuery函数值转换为ScalaJS(scalajs-jquery) [英] How to translate a JQuery function value in Javascript to ScalaJS (scalajs-jquery)

问题描述

在我的ScalaJS项目中，我将语义UI 与

In my ScalaJS project I use Semantic-UI with scala-js-jquery

我用它来修补JQuery:

I use this to monkey patch JQuery:

  // Monkey patching JQuery
  @js.native
  trait SemanticJQuery extends JQuery {
    def dropdown(params: js.Any*): SemanticJQuery = js.native
    def popup(params: js.Any*): SemanticJQuery = js.native
    // and more
  }

  // Monkey patching JQuery with implicit conversion
  implicit def jq2semantic(jq: JQuery): SemanticJQuery = jq.asInstanceOf[SemanticJQuery]

例如$('select.dropdown').dropdown();

翻译为jQuery(".ui.dropdown").dropdown(js.Dynamic.literal(on = "hover")).

我现在的问题是如何翻译:

My problem now is how to translate this:

// custom form validation rule
$.fn.form.settings.rules.adminLevel = function(value, adminLevel) {
  return (window.user.adminLevel >= adminLevel)
};

推荐答案

您的JS代码段

// custom form validation rule
$.fn.form.settings.rules.adminLevel = function(value, adminLevel) {
  return (window.user.adminLevel >= adminLevel)
};

直接翻译为

import scala.scalajs.js
import scala.scalajs.js.Dynamic.{global => g}

// custom form validation rule
g.$.fn.form.settings.rules.adminLevel = { (value: js.Dynamic, adminLevel: js.Dynamic) =>
  g.window.user.adminLevel <= adminLevel
}

如果可以用静态类型来表示那些结构，可以对静态类型做得更好，但是如果您对动态类型的解决方案感到满意，那么基本上就是这样.

You could do something nicer with static types if you have some to represent those structures, but that's basically it if you're satisfied with a dynamically typed solution.

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