splice-arrays.md

title	tags	goal	date	summary	categories
Splice using Array.splice	code Javascript	Front-End Engineering	2019-06-01	The swiss-army knife of arrays	code

• changes array contents in place by removing or replacing existing elements and/or adding new elements

• remove a range of elements: {{< highlight javascript >}} gas.splice(0, 4) // removes first four elements {{< / highlight >}}

• splice in new elements at the beginning, middle, or end, replacing the Index → Count range defined by the first two args: {{< highlight javascript >}} gas.splice(1, 0, 'foo', 'bar'); // inserts two new els at idx 1 {{< / highlight >}}