40media Running JavaScript in a UIWebView before any other JavaScript is run

Running JavaScript in a UIWebView before any other JavaScript is run

I have a UIWebView component that is going to load a webpage which might contain JavaScript. I want to run some JavaScript of my own before any JavaScript on the loaded webpage runs. I know I can use [myWebView stringByEvaulatingJavaScriptFromString:] on the webViewDidFinishLoad: delegate of the UIWebView, however this will only run my JavaScript after the JavaScript on the webpage is run.

Is the only solution to inject my JavaScript into the source code of the webpage? For example, I would put it immediately after the <head> tag to insure it is the first JavaScript that is run.

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I would like an answer to this question as well. indentationLevel property doesn't appear to do anything? I must receive it to job for the initial loading of the page by putting [myWebView stringByEvaluatingJavaScriptFromString: js] inside webViewDidStartLoad. How do I programatically pull lists/arrays of (itunes urls to) apps in the iphone app store? On refresh, however, it does not appear to work.. iTune-style apps using C# Edit: I found this work-around (similar to the suggestion in your question.) Not sure how robust it is. how to remove subviews from scrollview? http://www.stevesaxon.me/posts/2011/window-external-notify-in-ios-uiwebview/. iPhone PHP integration
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Check this post around JS execution order. There is ananother tutorial here for the same issue. If you have a problem with a specific piece of code add it here in a detailed case and will see what it must be done..

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