1.1js Language Core

A: Object: An object is a collection of name/value pairs, or a mapping of string-to-value pairs.

1.1 objects are enclosed in curly braces and contain attributes and values;

Eg:var book = {name: ' Zhang ', Age: ' 22 '};

1.2 Accessing Object Properties

A, Book.name//zhang

B, book["name"]//zhang

C, Book.author = "Joy"; Create a new property by assigning a value

D, book.content = {}; Create a new object

1.3 Array Objects

var arry = [1,2,3,4];

Arry.length//4

Arry[0]//1

ARRY[4] = 5; Assigning a value to index 4

ARRY[4] = 6; Change the value of index 4 to 6

1.4 An Array object can contain another set of array objects

var pointer = [

{A: ' ASD ', B: ' Asdas '},

{c: ' Dsadas ', d:123}

];

The object contains an array.

var data = {

data1:[[1,2],[3,4]],

data2:[[5,6],[7,8]]

};

1.1js Language Core