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Editorial Team
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Asked: 2026-05-23T12:46:21+00:00

I want to execute javascript code from my iPhone application using UIWebView. But only

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I want to execute javascript code from my iPhone application using UIWebView.

But only html part is executing while javascript part is not executing. It’s also not showing an error.

NSMutableString *htmlCode = [NSMutableString stringWithString:@"<!DOCTYPE HTML>"];


[htmlCode appendString:@"<html><head><tilte> sadaf </title>"];

[htmlCode appendString:@"<h1>My First Web Page</h1>"];


[ htmlCode appendString:@" <p id='demo'>This is a paragraph.</p>"];
[self.webView loadHTMLString:htmlCode baseURL:nil];


webView.delegate= self;

[webView stringByEvaluatingJavaScriptFromString:@"<script type='text/javascript'>document.getElementById('demo').innerHTML=Date();</script>   "];
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1 Answer

  1. Editorial Team

    Check if delegate has been set correctly.

    - (void)viewDidLoad 
{
    [super viewDidLoad];

    //  init and create the UIWebView
    webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 88, 320, 400)]; 
    webView.autoresizesSubviews = YES;
    webView.autoresizingMask=(UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth);
    [webView  setDelegate:self];//set the web view delegates for the web view to be itself
    NSMutableString *htmlCode = [NSMutableString stringWithString:@"<!DOCTYPE HTML>"];

    [htmlCode appendString:@"<h1>My First Web Page</h1>"]; 
    [htmlCode appendString:@" <p id='demo'>This is a paragraph.</p>"]; 
    [htmlCode appendString:@"</form> </body> </html> "]; 
    [self.webView loadHTMLString:htmlCode baseURL:nil];

    [self.view addSubview:webView];//add the web view to the content view
}

- (void) webViewDidFinishLoad:(UIWebView *)webView1
{
    NSLog(@"webViewDidFinishLoad");
    [webView1 stringByEvaluatingJavaScriptFromString:@"alert('hi');document.getElementById('demo').innerHTML=Date();"];
}

    This may help!

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