iOS Swift 5：如何在 WKWebView 中执行 js 文件？

Question

How can i execute script.js in WKWebView ? I know about webView.evaluateJavaScript but i can't figure out how to evaluate my script.js file, i already tried some solutions i found on stackoverflow by other users but nothing works can anybody help me with this? i'm losing my mind:(

This is what i tried:

func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
                       webView.evaluateJavaScript("script.js", completionHandler: nil)
               }

Answer 1

If you are just trying to run some javascript but you don't actually want to connect it to an HTML document then you should be using JavaScriptCore rather than WKWebview.

import JavaScriptCore

let context = JSContext()

guard let path = Bundle.main.path(forResource: "script", ofType: "js"),
  let script = try? String(contentsOfFile: path, encoding: .utf8) else {
    fatalError("cannot load script")
}

let jsResult = context?.evaluateScript(script)
print(jsResult)