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Editorial Team
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Asked: 2026-05-24T07:03:43+00:00

I am having a really weird bug for UIWebView , I load a very

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I am having a really weird bug for UIWebView, I load a very simple html into the UIWebView:

[self.webview loadHTMLString:@"<html><body><div id='hello'>hello world</div></body></html>" baseURL:nil];

and then call 4 lines below:

NSString *body = [self.webview stringByEvaluatingJavaScriptFromString:
                    @"document.getElementsByTagName('body')[0].outerHTML"];

NSString *helloValue = [self.webview stringByEvaluatingJavaScriptFromString:
                    @"document.getElementByID('hello').value"];

NSString *helloOuter = [self.webview stringByEvaluatingJavaScriptFromString:
          @"document.getElementByID('hello').outerHTML"];

NSString *helloInner = [self.webview stringByEvaluatingJavaScriptFromString:
                @"document.getElementByID('hello').innerHTML"];

NSString *helloElement = [self.webview stringByEvaluatingJavaScriptFromString:
          @"document.getElementByID('hello')"];

Only the first line, using getElementsByTagName return me the correct body html, all other lines just return me an empty string @””. What can go wrong with my code? How can I get the div that has an id of hello

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1 Answer

  1. Editorial Team

    I figured out the problem: it was my stupid misspelling, getElementById instead of getElementByID

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