Unable to move UIWebView to a specified section in iOS11 (iPad)

Question

We have used the below lines of code to move to the web view:

[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"window.location.hash=\'#-1\';"]];
[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"window.location.hash=\'#%@\';", index]];

but somehow this code doesn't work only in iPad. Here is how I initialised the web view:

webView = [[UIWebView alloc] initWithFrame:self.view.bounds];
[webView setDelegate:self];
[webView.scrollView setDelegate:self];
[webView setBackgroundColor:WHITECOLOR];
[webView setScalesPageToFit:YES];
[webView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self.view addSubview: webView];

Could someone please guide me how to debug it.

Answer 1

In iOS11 location.hash seems to be broken, but it's a simple solution to this. Instead using an usual combination:

location.hash = "";
location.hash = _some_hash_string_

use javascript below:

var hashElement=document.getElementsByName(_some_hash_string_)[0];
if(hashElement) {
    hashElement.scrollIntoView();
} else { 
    // if the element is not found - scroll to top
    document.documentElement.scrollIntoView(); 
}