StackOverflow2013

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plurals

PO
primarykey
Id
9216440
data
AcceptedAnswerId
0
AnswerCount
0
ClosedDate
CommentCount
0
CommunityOwnedDate
CreationDate
2012-02-09T18:16:55.333
FavoriteCount
0
LastActivityDate
2012-02-10T08:31:40.960
LastEditDate
2012-02-10T08:31:40.960
LastEditorUserId
157247
OwnerUserId
157247
ParentId
9216315
PostTypeId
2
Score
3
ViewCount
0
LastEditorDisplayName
text
Body
You wan to call the function, not just refer to it: <pre><code>myLabel.text = [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.textContent()"]; </code></pre> the key bit is at the end: <pre><code>...documentElement.textContent()"]; // ^^ </code></pre> Since JavaScript functions are first-class objects, when you do: <pre><code>x = functionName; </code></pre> ...<code>x</code> receives a reference to the function. In your case, since the UIWebView then coerces it to a string, you end up calling <code>toString</code> on the function, which on most JavaScript implementations gives you the code of the function (although this is not specified by any standard). To actually call a function, you put parentheses after it (with nothing in them, if there are no arguments you need to pass; or with arguments in them if you do), e.g.: <pre><code>x = functionName(); </code></pre> Disclosure: I know nothing about iOS development, Objective-C, or <code>UIWebView</code>, but I was able to quickly find the <a href="https://developer.apple.com/library/ios/#documentation/uikit/reference/UIWebView_Class/Reference/Reference.html" rel="nofollow"><code>stringByEvaluatingJavaScriptFromString</code></a> function you were using, and then confirmed via <a href="http://iphoneincubator.com/blog/windows-views/how-to-inject-javascript-functions-into-a-uiwebview" rel="nofollow">this page</a> that the string after the <code>@</code> needs to be valid JavaScript code.
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1. POHow pass a value from javascript to objective-C
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1. PTAnswer
UserLastEditorUserId
1. UST.J. Crowder
UserOwnerUserId
1. UST.J. Crowder
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1. POHow pass a value from javascript to objective-C
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