What is jdt?

JDT is a JavaScript tool that lets you take data formatted as JSON and automatically inject it into an HTML page. The core idea is keeping your data, your page structure, and your styling all separate, so you can update what a page displays without reloading it. The way it works is based on CSS class names. You write a normal HTML template where elements have class names that match the keys in your JSON data. When you call JDT.process() with your data, the tool walks through the HTML, finds elements whose classes match the data keys, and fills in the corresponding values. For example, if your JSON has a key called "books-count" with a value of "10", the tool will find any HTML element with the class "books-count" and put "10" inside it. It also handles lists of items, so if you have an array of books, it can duplicate a table row template for each one and fill in the details. This would be useful for someone building a web page that fetches fresh data from a server and needs to display it on screen without a full page reload. For instance, if you have a dashboard showing library statistics and a list of books, you could write one HTML template row for a book, send the server's response through this tool, and get back a fully populated table without writing much custom code yourself. The tool also supports a few variations beyond plain text replacement. It can update form input values, assign CSS classes to elements (for example, coloring items red or green), and optionally insert raw HTML rather than escaped text. The README notes one gotcha: trailing commas in your JSON data will cause Internet Explorer to crash, so you need to be careful with formatting there.