Using `[removed].hash.includes` throws “Object doesn't support property or method 'includes'” in IE11

Question

I am checking the URL to see if it contains or includes a ? in it to control the hash pop state in the window. All other browsers aren’t having an issue, only IE.

Answer 1

As in Internet Explorer, the javascript method "includes" doesn't support which is leading to the error as below

dijit.form.FilteringSelect TypeError: Object doesn't support property or method 'includes'

So I have changed the JavaScript string method from "includes" to "indexOf" as below

//str1 doesn't match str2 w.r.t index, so it will try to add object
var str1="acd", str2="b";
if(str1.indexOf(str2) == -1) 
{
  alert("add object");
}
else 
{
 alert("object not added");
}