JavaScript Lesson Three

1. String (stfing)

2. Value (number)

3. Variables are defined by the var operator plus the variable name.

4 Boolean values are only true and False Two (Boolean).

5. Objects (object). Array arrays (object)

6. Review the data type (typeof).

7. Converted into numbers (parseint () he only recognized integers) (parsefloat () he only recognized numbers)

8. Determine the variable type (typeof (a) = = "Sting") (typeof== "number")

9.null empty variable undefined is not.

Ten. (a=i++ A is i) (A=++i A is i+1)

1. If is what happens if it does not set up do not.

2.

Switch (MUN) {
Case "a":
Alert ("You have selected a package");
Break
Case "B":
Alert ("You chose the B package");
Case "C":
Alert ("You chose the C package");
Case "D":
Alert ("You have selected D package");
Default
Alert ("Welcome next time");

}

JavaScript Lesson Three