JavaScript. Lesson 6 презентация

Ноябрь 15, 2021

Содержание

2. JavaScript Array Object An array is a special variable, which can hold more than one value
3. Create an Array 1: Regular: var myCars=new Array(); myCars[0]="Saab"; myCars[1]="Volvo"; myCars[2]="BMW"; 2: Condensed: var myCars=new Array("Saab","Volvo","BMW");
4. Join two arrays-concat() Click the button to join two arrays. Try It function myFunction() { var
5. Click the button to join three arrays. Try It function myFunction() { var hege = ["Cecilie",
6. Click the button to join the array elements into a string. Try it function myFunction() {
7. Click the button to remove the last array element. Try it function myFunction() { var fruits
8. Click the button to add a new element to the array. Try it function myFunction() {
9. Click the button to remove the first element of the array. Try it function myFunction() {
10. Click the button to add elements to the array. Try it function myFunction() { var fruits
11. Click the button to reverse the order of the elements in the array. Try it function
12. Click the button to extract the second and the third elements from the array. Try it
13. Click the button to sort the array. Try it function myFunction() { var fruits = ["Banana",
14. Click the button to sort the array. Try it function myFunction() { var points = [40,100,1,5,25,10];
15. Click the button to sort the array. Try it function myFunction() { var points = [40,100,1,5,25,10];
16. Click the button to add elements to the array. Try it function myFunction() { var fruits
17. Click the button to convert the array into a String. Try it function myFunction() { var
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JavaScript Array Object
An array is a special variable, which can hold more than

one value at a time. An array can hold many values under a single name, and you can access the values by referring to an index number.

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Create an Array
1: Regular:
var myCars=new Array(); myCars[0]="Saab"; myCars[1]="Volvo"; myCars[2]="BMW";
2: Condensed:
var myCars=new Array("Saab","Volvo","BMW");
3: Literal:
var

myCars=["Saab","Volvo","BMW"];

An array can be created in three ways.

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Join two arrays-concat()
Click the button to join two arrays.

onclick="myFunction()"> Try It

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Click the button to join three arrays.

Join three arrays-concat()

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Click the button to join the array elements into

a string.

Join all elements of an array into a string-join()

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Click the button to remove the last array element.

it

Remove the last element of an array- pop()

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Click the button to add a new element to

the array.

Add new elements to the end of an array-push()

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Click the button to remove the first element of the

array.

Remove the first element of an array- shift()

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Click the button to add elements to the array.

it

Add new elements to the beginning of an array - unshift()

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Click the button to reverse the order of the elements

in the array.

Reverse the order of the elements in an array – reverse()

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Click the button to extract the second and the third

elements from the array.

Select elements from an array – slice()

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Click the button to sort the array.

Sort an array (alphabetically and ascending) – sort()

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Click the button to sort the array.

Sort numbers (numerically and ascending) - sort()

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Click the button to sort the array.

Sort numbers (numerically and descending) - sort()

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Click the button to add elements to the array.

it

Add an element to position 2 in an array - splice()

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Click the button to convert the array into a String.

onclick="myFunction()">Try it

Convert an array to a string - toString()

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