Bug 184514 – Cannot set window.location immediately after window.open('')

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: WebCore JavaScript

[Justin D'Arcangelo]

In a WKWebView, web content cannot set `window.location` or `window.opener` on a `Window` returned immediately after calling `window.open('')` or `window.open('about:blank')`. For example, clicking the link in the following HTML/JS snippet will result in a BLANK `WKWebView` being opened via `webView(_:createWebViewWith:for:windowFeatures:)` and the location is never set:

```
<a href="https://webkit.org/" id="brokenlink">Click Me</a>

<script>
  var brokenlink = document.getElementById('brokenlink');
  brokenlink.addEventListener(function(evt) {
    evt.preventDefault();

    var openedWin = window.open('about:blank');
    openedWin.location = this.href;
  });
</script>
```

A more in-depth version of the above example can be found at: http://output.jsbin.com/tegacej

Also, a minimal proof-of-concept iOS app to reproduce this issue can be found at: https://github.com/justindarc/WebViewOpenTester

[Justin D'Arcangelo]

After further investigation, I realized that the documentation mentions that *WebKit* will load the request in the returned web view from `webView(_:createWebViewWith:for:windowFeatures:)`. In my example, I am loading the request myself which seems to break this. I'm going to mark this as resolved. Sorry for the confusion.