JSFiddle - React, Tailwind, and code Playground

JavaScript

var string="ITEMS,DESCRIPTION,UMO,QTY,PRICE,lineamount,CUSTOMERID,TODAY DATE,ORDERID,BOOKORDER,FOC BODYLINE SUPER 20 G*10 DOZ,100MG,CTN,1,1093.55,1093.55,ARU011,2015-4-9,Himansu15:9:59059,ABCARU0119590,‌​0 TOTALAMOUNT,DISCOUNT,NET AMOUNT,VAT,GROSS AMOUNT,BOOKORDER,CUSTOMERID,TODAYDATE 38426.87,1,38042.6,2,38803.45,ABCARU011959,ARU011,2015-4-9";

var string1=string.substring(0,string.indexOf("TOTALAMOUNT"));
var string2=string.substring(string.indexOf("TOTALAMOUNT"),string.length);


alert(string1);
alert(string2);