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Asked: 2026-05-27T03:09:40+00:00

I have a webpage loaded in a UIWebView, and a javascript function of the

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I have a webpage loaded in a UIWebView, and a javascript function of the page needs to data from native iOs app, a NSString. How can a Js function access the data in native app?

Thanks,

lvreiny

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1 Answer

  1. Editorial Team

    You can execute JavaScript in your UIWebView from Obj-C. Simply call [webView stringByEvaluatingJavaScriptFromString:@"myJavaScript"];.

    I could imagine a setup like this:

    Webpage

    <html>
   <head>
      <script type="text/javascript">
         function callmeFromObjC(para1) {
             // do something
             alert(para1);
         }
      </script>
   </head>
   <body>
   </body>
</html>

    Objective-C

    NSString *myParameter = @"myParameter";
[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"callmeFromObjC('%@')", myParameter]];
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