Question

I’m loading a string of HTML into a UIWebView through loadHTMLString. It produces a very long webpage. Once that string is loaded, I need to navigate to an HTML anchor tag with its "name" attribute set. In the HTML, I might have:

//3 pages of text here
<a name="go here"></a> lots more text here
//another 3 pages of text here

I need the webpage to scroll down to "go here" once loaded. The mappings work fine if a user clicks a link inside of the webpage and it loads an external URL. But in this case, I need to initially scroll down an already loaded webpage.

I can still execute JavaScript code like this:

[MyWebView loadHTMLString:dataString baseURL:[NSURL URLWithString:@"http://www.myscheme.com"]];
[webView stringByEvaluatingJavaScriptFromString:@"javascriptFunc('param1');"];

But I need something similar for navigating to the anchor tag. Any suggestions?

Answer 1

You can jump to an anchor in an already-loaded HTML file by doing:

[webView stringByEvaluatingJavaScriptFromString:@"window.location.hash='#foo'"];

This will do the jump, sans animation.