To get the whole HTML raw data (with <head> and <body>):
NSString *html = [webView stringByEvaluatingJavaScriptFromString:@"document.documentElement.outerHTML"];
(Xcode 5 iOS 7) Universal App example for iOS 7 and Xcode 5. It is an open source project / example located here: Link to SimpleWebView (Project Zip and Source Code Example)
Note that the NSString stringWithContentsOfURL will report a totally different user-agent string than the UIWebView making the same request. So if your server is user-agent aware, and sending back different html depending on who is asking for it, you may not get correct results this way.
Also note that the @"document.body.innerHTML" mentioned above will only display what is in the body tag. If you use @"document.all[0].innerHTML" you will get both head and body. Which is still not the complete contents of the UIWebView, since it will not get back the !doctype or html tags, but it is a lot closer.
you should try this:
document.documentElement.outerHTML
if you want to extract the contents of an already-loaded UIWebView, -stringByEvaluatingJavaScriptFromString. For example:
NSString *html = [webView stringByEvaluatingJavaScriptFromString: @"document.body.innerHTML"];
get HTML from UIWebView`
let content = uiWebView.stringByEvaluatingJavaScript(from: "document.body.innerHTML")
set HTML into UIWebView
//Do not forget to extend a class from `UIWebViewDelegate` and nil the delegate
func someFunction() {
let uiWebView = UIWebView()
uiWebView.loadHTMLString("<html><body></body></html>", baseURL: nil)
uiWebView.delegate = self as? UIWebViewDelegate
}
func webViewDidFinishLoad(_ webView: UIWebView) {
//ready to be processed
}
To read:-
NSString *html = [myWebView stringByEvaluatingJavaScriptFromString: @"document.getElementById('your div id').textContent"];
NSLog(html);
To modify:-
html = [myWebView stringByEvaluatingJavaScriptFromString: @"document.getElementById('your div id').textContent=''"];
In Swift v3:
let doc = webView.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
I use a swift extension like this:
extension UIWebView {
var htmlContent:String? {
return self.stringByEvaluatingJavaScript(from: "document.documentElement.outerHTML")
}
}
Source: Stackoverflow.com