Extendscript, is there an "includes()" function? I could not find it

[Bed30321077z973]

I tried this:

var a = "Test,_,t"
var b = a.includes("7");

So I got this error:

a.includes is not a function

So is there any other way to verify the if a string is inside another string please?

[Bruce Bullis · Accepted solution]

Here's PProPanel using ExtendScript to find an occurrence of a string, within a string:


https://github.com/Adobe-CEP/Samples/blob/e60d6a22ef44d8eb4cca3904c35a0c050576b697/PProPanel/jsx/PPR...