Translations

Everything inside your document is a node - HTML tags, text inside the tags and comments. These nodes have a hierarchical relationship, making a tree of nodes called the DOM tree. A large DOM tree harms your network efficiency and load performance as the browser has to parse lots of nodes that aren't displayed above-the-fold. Additionally, a large DOM tree increases memory usage, requires massive style calculations, and produces costly layout reflows.

Everything inside your document is a node - HTML tags, text inside the tags and comments. These nodes have a hierarchical relationship, making a tree of nodes called the DOM tree. A large DOM tree harms your network efficiency and load performance as the browser has to parse lots of nodes that aren't displayed above-the-fold. Additionally, a large DOM tree increases memory usage, requires massive style calculations, and produces costly layout reflows.