iOS How to run javascript functions from UIWebView

[tdog09]

Hi All-

So I've been bashing my head in with this the past few days. What I have is a UIWebView that has loaded a webpage, say www.mypage.com.

The html of mypage.com contains javascript that computes certain things for the page to display.

How would I be able to call the javascript functions of this page from objective c, and return those values?

Say the webpage has a function called foo(), that when called spits out the phrase,"foo was called". I would like from object C to be able to call this function, and print what it returns in NSLOG. Is this possible?

Any help is greatly appreciated. Thanks!

 

[firewood]

Read the UIWebview documentation and look up the stringByEvaluatingJavaScriptFromString method.

 

[tdog09]

Read the UIWebview documentation and look up the stringByEvaluatingJavaScriptFromString method.

Thanks but i am working with this, and threw my million tries have yet to get it to work. I do read documentation, and have read tons, but still to no avail.

Thanks!

 

[Guiyon]

What exactly are you having problems with? Do you have a code snippet that isn't working?

 

[firewood]

Have you googled for working examples on the web?

 

[ghayenga]

Thanks but i am working with this, and threw my million tries have yet to get it to work. I do read documentation, and have read tons, but still to no avail.

Thanks!

NSLog(@"js result -", [webView stringByEvaluatingJavaScriptFromString"foo();"]);

works for me.

 

[anmldr]

Also try something simple first...make sure that JavaScript is turned on in the device's preferences.

Linda

 

[firewood]

Are you sure you've loaded the entire web page into the UIWebView?

Some devs have forgotten to put all the parts into the app bundle the correct way.