The plugin automatically adds class="placeholder" to the elements who are currently showing their placeholder text. You can use this to style placeholder text ...

A JSON file is a Javascript file supported by many different programming APIs; working on JSON files is essential for developers, coders, data analysts, or anyone working within a data-driven process.

The following in-depth article explains what happens there: Why does JSON.parse corrupt large numbers and how to solve this? Numbers are parsed into a LosslessNumber ...