Question

Here is what I’m trying to do:

httpReq.onreadystatechange = function() {
    if (httpReq.readyState == 4) {
        if (httpReq.status == 200) {
            var response = httpReq.responseText;
            if (response == "-2") document.shortener_form.urlField.value = "";
            else {
                document.shortener_form.urlField.value = response;
                window.open("http://example.com", '_blank');
            }
        } else {
            document.shortener_form.urlField.value = "Error!";
        }
    }
};

The window.open function on line 8 is not executing. It works everywhere else, just not within that anonymous function. I’m terrible at Javascript, I’ve searched Google and SO however found no answer. Thanks.

Edit: by the way, the function works everywhere else on the page and script, so I’ve isolated the problem to be within this anonymous function.

Answer 1

It is a popup blocker problem. Your browser doesn’t want to allow window.open() unless it is the direct result from a user action (e.g. mouse click).