In jQuery, there are two methods you can use to get an element’s children. The contents() method will get all child nodes including comment and text nodes. The children() method will only get children that are HTML elements. Here’s how to do this in vanilla JS with browser support back to IE9.
In jQuery, you can use the attr() and removeAttr() methods to manipulate an HTML element’s attributes. These methods really are redundant these days. You can do this so easily in vanilla JS with full support back to IE8.