the murmurous sea

1. divides a String into an ordered set of substrings. 2. puts these substrings into an array, and returns the new array. 3. The division is done by searching for a pattern; where the pattern is provided as the first parameter in the method's call. 4. The split() method does not change the original string. [Syntax] str.split([separator[, limit]]) separator optional Specifies the character, or th..

padStart() 1. pads the current string with another string (multiple times, if needed) until the resulting string reaches the given length. 2. The padding is applied from the start of the current string. [Syntax] str.padStart(targetLength [, padString]) targetLength The length of the resulting string once the current str has been padded. If the value is less than str.length, then str is returned ..

1. a minimal document object that has no parent. 2. used as a lightweight version of Document that stores a segment of a document structure comprised of nodes just like a standard document. 3. The key difference is due to the fact that the document fragment isn't part of the active document tree structure. 4. Changes made to the fragment don't affect the document (even on reflow) or incur any pe..

1. method 2. inserts a node before a reference node as a child of a specified parent node. 3. use the insertBefore method to insert/move an existing element. 3. a node cannot be in two locations of the document simultaneously. : If the given node already exists in the document, insertBefore() moves it from its current position to the new position. (That is, it will automatically be removed from ..

[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..

1. Method 2. Reduces the array to a single value. 3. Executes a provided function for each value of the array (from left-to-right). 4. The return value of the function is stored in an accumulator (result/total). : value is remembered across each iteration throughout the array and ultimately becomes the final, single resulting value. 5. Does not execute the function for array elements without val..

1. method 2. sorts the elements of an array in place and returns the sorted array. 3. changes the original array. 4. sort order can be either alphabetic or numeric, and either ascending (up) or descending (down). 5. By default, the sort() method sorts the values as strings in alphabetical and ascending order. 6. converting the elements into strings, then comparing their sequences of UTF-16 code ..