title: How to read a Excel file and convert it to JSON Array in JavaScript?
body: <p>I have an excel file with multiple sheets in it. I want to read the sheets one by one and store the data in each sheet in JSON Arrays where each array contains data in one sheet.</p>
  
  <p>Can someone please help me out here? Is there any JavaScript library to do this?</p>
  
  <p>Each sheet has three columns and I want to store the data from these columns in JSON Array.</p>