从swift注入本地存储到WKWebview

Posted 2021-03-30

我的Swift代码：

self.webView.evaluatejavascript("javascript: localStorage.setItem('usr_dtls', 'vivek')") { (result, error) -> Void in
            print(result)
            print(error)
        }

Error message in cosole:
nil
Optional(Error Domain=WKErrorDomain Code=4 "A JavaScript exception occurred" UserInfo={WKJavaScriptExceptionLineNumber=1, WKJavaScriptExceptionMessage=SecurityError (DOM Exception 18): The operation is insecure., WKJavaScriptExceptionColumnNumber=25, WKJavaScriptExceptionSourceURL=about:blank, NSLocalizedDescription=A JavaScript exception occurred})

知道什么是错的吗？

答案

由于evaluateJavaScript执行代码就好像来自Safari Inspector的控制台，因此不使用javascript:。

另外，javascript:前缀用于从URL执行JavaScript（您可以通过在浏览器的地址栏中键入（而不是复制粘贴）javascript: alert('howdy')来测试它）。

另一答案

//Found a solution.Execute Javascript after webView finished loading
//Sample code:

    self.webView.navigationDelegate = self

    func webView(_ webView: WKWebView,
                     didFinish navigation: WKNavigation!)
        {
            self.webView.evaluateJavaScript("localStorage.setItem('usr_dtls', 'vivek')") { (result, error) -> Void in

                print("Finished navigation and Local storage injection.")
            }
        }
    //Run the app and debug using Safari Technology Preview
    //You will see the injected data as Show in the image below:

    [![Screenshot][1]][1]


      [1]: https://i.stack.imgur.com/tzGUc.png