iOS: Load Form in a UIWebView and Submit

[self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.getElementById('username').value ='%@'", @"user"]];

    

[self.webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"document.getElementById('password').value ='%@'", @"passs"]];

    

[self.webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('loginForm').submit()"];