In the case of JavaScript tables, this approach is useless because the data we need is not in the HTML file. However, HTML tables, as their name suggests, are tables built directly on the HTML file, while dynamic web tables are rendered by the browser - in most cases - by fetching a JSON file containing the information and following directives written on JavaScript to inject the data into the HTML.īut what does it mean for us? HTML tables can be accessed simply by requesting the HTML file of a website and then parsing it for the information we want using CSS classes and IDs.
On the front-end, HTML tables, and JavaScript tables look the same, both displaying the data in a grid format. Unlike HTML tables, the data within a JS table is injected into the page after the rendering stage, making it possible to autogenerate as many rows and columns as needed to accommodate the data, auto-populate them with content on-demand and use any JavaScript function on the data to sort, rank, or change the table itself. JavaScript tables, also called dynamic tables or AJAX tables, are a set of rows and columns that are used to display dynamic data in a grid format directly on a web page. In this tutorial, we’ll understand the difference between HTML and JavaScript tables, why the latter is harder to scrape and we’ll create a script to circumvent the challenges of rendering tables without using any highly complex technologies.
That said, not all tables are made the same and some can be really tricky to scrape using conventional techniques. They already have an easy-to-read and understand format and are used to display large amounts of useful information like employee data, statistics, original research models, and more. Web tables are some of the greatest sources of data on the web.
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