I have this function in one of my java script files where it uses an ajax request to get some data. I found that if the wrong path is entered i.e. the url is not correct:

Ext.Ajax.request({ url: comURL, method: 'GET', success: function(response) { upMeet.innerHTML=response.responseText; }, failure: function(response){ alert("Failed to load Meetings. Please contact support"); } });

Then the entire page fails to recognize the rest of the javascript file's 3000+ lines of code.

I have since fixed the file path but I'm still curious as to why a wrong path nullifies the rest of the file (in all browsers).

I don't really know how Ext.Ajax.request works, but may be it is throwing an Exception when it finds a "non-reachable" url.

Why don't you try by wrapping that code inside a try and catch block. Something like below:

try { Ext.Ajax.request({ url: comURL, method: 'GET', success: function(response) { upMeet.innerHTML=response.responseText; }, failure: function(response){ alert("Failed to load Meetings. Please contact support"); } }); } catch (e) { console.log(e); }

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