JSFiddle - React, Tailwind, and code Playground

JavaScript

var fruits = ["orange","orange,apple","apple,orange,pear"];
var out = [];

$(fruits).each(function(i) {
  var s = fruits[i].split(',');  
    $(s).each(function(i) {
        if($.inArray(s[i], out)===-1) 
        {
            out.push(s[i]);
        }
    });
});
 fruits = out;
$(out).each(function(i) {
   console.log(out[i]); 
});