topic Re: ReferenceError: event is not defined in ArcGIS JavaScript Maps SDK Questions

ReferenceError: event is not defined

JaredPilbeam2 — Sat, 11 Dec 2021 17:15:00 GMT

I have an app that works as it should in Chrome and IE. In FireFox it doesn't.

The error in the console is pointing to a specific line (line 2:15 here) of the html:

        attTypeSelect.addEventListener("change", function () {
          var type = event.target.value;
          setattractionsDefinitionExpression(type);
        });‍‍‍‍

Here's what is (or isn't) happening:

When you choose a Type from the dropdown menu it will not populate on the map.

Re: ReferenceError: event is not defined

RobertScheitlin__GISP — Sat, 11 Dec 2021 17:15:03 GMT

Jared,

I always use dojo/on for this:

        // set a new definitionExpression on the attractions layer
        on(attTypeSelect, "change", function (event) {
          var type = event.target.value;
          setattractionsDefinitionExpression(type);
        });‍‍‍‍‍

I tested in FireFox and it works fine.

Re: ReferenceError: event is not defined

Noah-Sager — Fri, 28 Dec 2018 16:52:19 GMT

Jared Pilbeam the code that Robert provided is fine, but if you don't want to use the dojo/on (which we have been removing from our samples to reduce dependencies), you could do a similar thing by just passing the event in the unnamed function. This also works fine across browsers, including Firefox. What is surprising is that Chrome and IE were smart enough to determine what the value of event was supposed to be.