Rx Learning Note: JavaScript array manipulation

Rx Learning Note: JavaScript array operations 2016-07-03 additions and deletions elements

Unshift () Adding elements to an array switch

Array.unshift ("value"); Array.unshift (123); Array.unshift ("value1", "value2");

Push () Adds an element at the end of the array

Array.push ("value"); Array.push (123); Array.push ("value1", "value2")

Pop () popup (removed in array and as return value) array tail element

Array.pop (); var newvar=array.pop ();

Shift () pops the first element of the array

Array.shift (); var newvar=array.shift ();

Iterated algebraic groups

Map () Iteration (traversal operation) array element, returning the new array

Reduce () iterates over the array elements, returns calculated values, and can be used to calculate sums, product, etc.

Filter () filters the element, returning the new array

Reverse () reverse permutation, return new array

Array manipulation

Concat () merges the array, returning the new array

Join () merges the array elements into a single string that can be separated by the specified characters

Split () (string method) splits a string into a string array using a specific character

Rx Learning Note: JavaScript array manipulation