Javascript literals and variables
1. Literal
Literals are some immutable values
For example: 1 2 3 4 5 6
Literals can be used directly, but we generally do not use literals directly
Two, variables
Variables can be used to save our literal, and the value of the variable can be changed arbitrarily, the variable is more convenient for us to use, so in our development, it is adopted, the variable to save our literal, especially in rare cases will Use literals directly
2.1 Declare variables
Use the var keyword in JS to declare a variable and assign a value to the variable.
Literal quantities can be described by variables
The result returned by the browser is:
