JSFiddle - React, Tailwind, and code Playground

by pierian_design

JavaScript

var aSheets = ['sheet1', 'sheet2', 'sheet3', 'sheet1'];

var sheetIndex = 1;
var sSheetName = '';

if (aSheets.indexOf('sheet1') !== -1) {
		while (aSheets.indexOf('sheet1') !== -1) {
    	sheetIndex++;
      sSheetName = ' - ' + sheetIndex;
    }
}

console.log(sSheetName);