Data binding in Vue.js is a process that allows you to link data from your view (HTML) to your instance data (JavaScript). This is done by using the v-bind directive.
For example, if you have a variable called “name” in your instance data, you can bind it to an HTML element like this:
{{ name }}
This will output the value of the “name” variable in the HTML element. Any changes to the “name” variable in the instance data will be reflected in the HTML element.