the murmurous sea

[Background] JavaScript DOM provides the insertBefore() method that allows you to insert a new node after an existing node as a child node. However, it has not supported the insertAfter() method yet. [To insert a new node after an existing node as a child node] : use the insertBefore() method and the nextSibling property. : to insert a new node before an existing node as a child of a parent node..

[Dom] : is the W3C Document Object Model. : is a W3C (World Wide Web Consortium) standard that defines a standard for accessing documents. Core DOM standard model for all document types XML DOM standard model for XML documents HTML DOM standard model for HTML documents : is a platform and language-neutral interface. : allows programs and scripts to dynamically access and update the content, stru..

[Background] Functions are Objects : In Javascript, functions are first-class objects. : can work in the same way with other objects, like assigning them to variables and passing them as arguments into other functions. [Why use this] Most of the programs and applications operate in a synchronous manner. When we don't know when data will be served back(such as an external API), we want to wait fo..