The seven big data types in JavaScript (types)

The seven big data types in JavaScript

1, undefined not defined

1 undefined

2, NULL NULL

1 NULL

3, Boolean Boolean type

1 true ; 2 false;

4, String strings

1 var myName = "Anet"; 2 var = "MyAge"; 3 // MyName, myage are all strings

5. Symbol (ES6 newly introduced data type: Prevent attribute name conflict)

1  var hello = Symbol ("Hello"); 2  var world= Symbol ("World"); 3 // Console Output 4 hello.tostring ()//Hello5 world.tostring ()//World 

6. Number

1 var myAge =; 2 // MyAge to Digital

7. Object objects

1  var obj =  new  Object (); 2  var object = {}; 3  var info = {4           "name": "MyName",5           "motto": "Hello World "6        }7//obj, object for initialization object, and info for object Format

For reference only.

The seven big data types in JavaScript (types)