What is the mechanism behind range traversal in Javascript?

Exploring the createRange() function and related constructs in Javascript has sparked my curiosity about its practical applications.

During my search, I stumbled upon an interesting application called "" that allows users to highlight text with mouse clicks and save the highlighted data - a handy tool for study and research purposes.

Despite its effective functionality, the application's HTML code is table-based. This led me to question whether it utilizes createRange() or similar functions, or if it operates on an entirely different mechanism.

Answer №1

The website utilizes ranges and the browser's Selection API for highlighting purposes. If you examine the code starting from line 822 in the demo page HTML, you can decipher its functionality. However, it is worth noting that the JavaScript highlight code is closely integrated with the specific HTML structure of the page, making it a less-than-ideal example to study.

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