Javascript - The Array object
April 2018
The Array object is one of the JavaScript core objects, allowing you to create and manipulate arrays.
Here is the syntax for creating an array:
var x = new Array(element1[, element2, ...]);
If no element is specified as a parameter, an empty array is created. Otherwise, it will be initialized with the values ??passed as parameters (element1,element2...).
The Array object has two characteristic properties: the input and length properties.
The following table describes the properties of the Array object.
| property | description |
|---|---|
| constructor | This property contains the constructor of the Array object. |
| input | This property allows you to search the array using a regular expression |
| length | This property contains the number of array elements. |
| prototype | Allows you to add custom properties to the object. |
The following table describes the methods of the Array object.
| Method | description |
|---|---|
| concat(array1, array2[, array3, ...]) | This method allows to concatenate multiple arrays |
| join(array) or Array.join() | This method returns a string containing all the elements of the array. |
| pop(array) or Array.pop() | This method removes the last element of the array and returns its value. |
| TArray.push(value1[, value2, ...]) | This method sums up one or more elements of the array. |
| Array.reverse() | This method reverse the order of the elements in the array. |
| Array.shift() | This method removes the first element of the array. |
| Array.slice() | This method returns an array containing part of the elements of an array. |
| Array.splice() | This method adds / removes elements from an array. |
| Array.sort() | This method is used to sort the elements of an array.. |
| Array.unshift(value1[, value2, ...]) | This method returns the source code that has created the Array object. |
| Array.toString() | This method returns the string corresponding to the instruction that helped create the Array object. |
| Array.unshift() | This method allows to add one or more elements to the beginning of the table. |
| Array.valueOf | This method simply returns the value of the Array object to which it refers. |
Original document published on CommentcaMarche.net