# Introduction

A WireBootstrap [DataTable](/wirebootstrap/reference/wire.data/wire.data.datatable.md) is a JavaScript class that contains an array of objects much like records in a database table.  The data table contains dozens of methods for working with the array of objects including filers, transformations, and calculations.  This class is located at `wire.data.DataTable`.

The example below creates a new `DataTable` from an array of objects.  The raw array is put into a public property called `Rows`.  Also, a `Columns` array is created that contains information about each [column](/wirebootstrap/reference/wire.data/wire.data.datatable/columns.md) in the data table.

```javascript
let users = [
    { Users: "jkratz", FullName: "Jamie Kratz" },
    { Users: "pdougherty", FullName: "Pat Dougherty" }
];

let table = new wire.data.DataTable(rows);

const rows = table.Rows;

const columns = table.Columns;
```

{% hint style="info" %}
Note, it's a good idea to use `let` or `var` scope when declaring arrays of rows to be used with a data table.  The array sits inside a data table as a reference and not a copy so using operations on the data table that are designed to change the data or the array will error if the array is declared using a `const`.  However, if the table is being created for read-only purposes, it's safe to use a `const`.
{% endhint %}


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