JSFiddle - React, Tailwind, and code Playground

JavaScript

//reference example...
var e = {
  data: {
    orderNumber: 8
  }
}

//example 1 using concatenated strings
var ae1 = JSON.parse('{"field": "OrderNumber","operator": "eq","value":"' + e.data.orderNumber + '"}');
var obj = ae1;
console.log(obj);

//example 2 using ES6 Template Literals

var ae2 = JSON.parse(`{"field": "OrderNumber", "operator":"eq","value":"${e.data.orderNumber}"}`);
obj = ae2;
console.log(obj);