Executing Javascript Code From Objective C

Question

I have some javascript code that I need to execute from an objective-c (iPhone) app.

The javascript code needs some of the values from the iPhone app. What I mean is, there is a spot in the iPhone app (a textbox) for a user to type their name. Then the javascript code that runs will be: alert(name)

where the name variable is really textbox.text

How can I do this from objective-c, without relying on an external webserver?

Thank you!

Thanks. I looked at those, but I'm afraid neither offers what I'm looking for -- most seem to rely on an external server. — John Smith
– John Smith, Commented Oct 27, 2011 at 22:10
Is it a major problem if my javascript does not have a return value? — John Smith
– John Smith, Commented Oct 27, 2011 at 22:42

Duncan Smart · Accepted Answer · 2011-10-27 22:06:23Z

1

Add a UIWebView and inject a <script> tag containing the JavaScript using [webview loadHTMLString: html]

answered Oct 27, 2011 at 22:06

Duncan Smart

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7 Comments

John Smith Over a year ago

Wouldn't that rely on a webserver, though?

Duncan Smart Over a year ago

No, loadHTMLString takes standalone HTML, no need for a web server.

John Smith Over a year ago

Thanks. Is there a way to make the webView invisible?

Duncan Smart Over a year ago

Yes, all UIView objects have a hidden property

John Smith Over a year ago

Is it a major problem if my javascript does not have a return value?

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