Question

I have the following code for my application.

- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    //Set the values
    NSString* firstValue = @"guest";
    NSString* secondValue = @"guest";
    // write javascript code in a string
    NSString* javaScriptString = @"document.getElementById('Login1_UserName').value=%@;"
    "document.getElementById('Login1_Password').value=%@;"
    "document.forms['form1'].submit();";

    // insert string values into javascript
    javaScriptString = [NSString stringWithFormat: javaScriptString, firstValue, secondValue];

    // run javascript in webview:
    [webView stringByEvaluatingJavaScriptFromString: javaScriptString];
}

- (void)launchWebPageWithOptions
{    
    NSString *urlString = @"http://demo.leadtools.com/MedicalViewer/default.aspx";
    NSURL *url = [NSURL URLWithString:urlString];
    NSURLRequest *requestObject = [NSURLRequest requestWithURL:url];
    [iOSWebView loadRequest:requestObject];
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    [self launchWebPageWithOptions];
}

For some reason, I am unable to execute the automatic login using the javascript calls. I am no JS Expert so if you can see any error in my javaScriptString, PLEASE let me know,

Answer 1

First, change your user and password formatted values to be quoted:

NSString* javaScriptString = @"document.getElementById('Login1_UserName').value='%@';"
    "document.getElementById('Login1_Password').value='%@';"
    "document.forms['form1'].submit();";

Notice that I’ve changed value=%@ to value='%@' in both cases. This will properly fill-in the input boxes.

Next, call the click() function on the Login button rather than calling submit() on the form:

NSString* javaScriptString = @"document.getElementById('Login1_UserName').value='%@';"
    "document.getElementById('Login1_Password').value='%@';"
    "document.getElementById('Login1_LoginButton').click()";

this will allow the onclick javascript specified for the Login button to be executed.