Swift...在运行时更改 .js 文件的变量 [英] Swift...Change variable of .js file during runtime

问题描述

我正在开发具有 WKwebview 的 IO 应用程序，我将配置设置为注入 .js 文件.

am working on an IOs application that has a WKwebview and i set the configuration to inject a .js file.

这是我的 javascript 文件.

this is my javascript file.

var User = ""
var Pass = ""

document.getElementsByName('username')[0].value = User
document.getElementsByName('password')[0].value = password
submitButton()

现在当我事先给变量值时代码运行完美.但是我稍后会尝试从 NSUserDefualts 更改 User 和 Pass 的值，但我不知道从哪里开始.

now the code runs perfect when i give the variables value before hand. however i am trying to change the value of User and Pass from NSUserDefualts later on but i have no idea where to start.

我尝试在没有帮助的情况下使用 javascript 框架.

i tried playing around with javascript framework with no help.

任何想法或方向将不胜感激.

any idea's or direction would be highly appreciated.

谢谢

推荐答案

我设法解决了这个问题，而不是沿着注入 javascriptfile 路径，而是通过保存用户并在 NSUserDefaults 中传递变量并从方法运行 javascript在我的 UIViewController 中

i managed to work around the problem not going down the injecting javascriptfile path, i but by saving the user and pass variables in NSUserDefaults and running the javascript from a method inside my UIViewController

代码并不漂亮，但它可以工作并且看起来像这样:

the code is not pretty but it works and looks something like this:

// the passed would be stored in NSUserDefaults

let passwd = "test"

// passEdited simply adds ' ' to the passwd you can just add them to the passwd variable but i like to see every step i am taking
let passEdited = "'" + passwd  +"'"

// this is the actual java code i would like to run
var passJS = "document.getElementByName('password')[0].value =" + passEdited

// check for correct Url before running the java code
if webView.URL?.absoluteString == "www.YOURWEBSITE" {
webView.evaluteJavaScript(passJS, completionHandler: nil)

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