Array Methods Reference
The following table lists all the Array methods.
Method | Description |
---|---|
concat() | Returns new array by combining values of an array that is specified as parameter with existing array values. |
every() | Returns true or false if every element in the specified array satisfies a condition specified in the callback function. Returns false even if single element does not satisfy the condition. |
filter() | Returns a new array with all the elements that satisfy a condition specified in the callback function. |
forEach() | Executes a callback function for each elements of an array. |
indexOf() | Returns the index of the first occurrence of the specified element in the array, or -1 if it is not found. |
join() | Returns string of all the elements separated by the specified separator |
lastIndexOf() | Returns the index of the last occurrence of the specified element in the array, or -1 if it is not found. |
map() | Creates a new array with the results of calling a provided function on every element in this array. |
pop() | Removes the last element from an array and returns that element. |
push() | Adds one or more elements at the end of an array and returns the new length of the array. |
reduce() | Pass two elements simultaneously in the callback function (till it reaches the last element) and returns a single value. |
reduceRight() | Pass two elements simultaneously in the callback function from right-to-left (till it reaches the last element) and returns a single value. |
reverse() | Reverses the elements of an array. Element at last index will be first and element at 0 index will be last. |
shift() | Removes the first element from an array and returns that element. |
slice() | Returns a new array with specified start to end elements. |
some() | Returns true if at least one element in this array satisfies the condition in the callback function. |
sort() | Sorts the elements of an array. |
splice() | Adds and/or removes elements from an array. |
toString() | Returns a string representing the array and its elements. |
unshift() | Adds one or more elements to the front of an array and returns the new length of the array. |