Javascript to export html table to Excel with change in column's having timeStamp to human readable Date and time

Question

My problem is that in my database all date column is stored in timestamp so during displaying data on the table we convert this into human-readable .So I want to do the same thing during export.

Below picture is my export data

This is my code

      export const onExport = (exportParams) => {
      let endpoint = exportParams.endpoint;
      if(store.state.project && store.state.project.id){
      endpoint += "&projectId=" + store.state.project.id;
    }
    window.location =
        store.state.api.url.replace("/v2.1", "") +
        "/grid/data/export?endpoint=" +
        encodeURIComponent(endpoint) +
        "&columns=" +
        encodeURIComponent(JSON.stringify(exportParams.columns)) +
        "&export-format=" +
        exportParams["export-format"] +
        "&name=" +
        exportParams.name +
        "&token=" +
        store.state.api.token;
      store.state.project.id : '';
      }; 

I go through several questions on StackOverflow but I did not find any solution

I visited. Javascript to export html table to Excel but I did not get my answer

The above picture is of stored value in the database.

So my goal is to get this column as human-readable in the export results. Thanks!