Need a custom java script URL code which can be pasted in the search bar (my browser). The function will search for a div class and text within another web page and then redirect if exists.

Need a custom java script URL code which can be pasted in the search bar (my browser). The function will search for a div class and text within another web page and then redirect if exists. - It will open a URL and if it finds the text within the loaded web page “page cannot be accessed” it will then redirect to another URL. The specific class I am search for is (<div ng-if="detailsLocKey" class="tb-error-box-message ng-scope">That page could not be accessed.</div>) I have attached an example target URL file James