Data and Variables Part 1

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In this lesson we learn In Java script -- how can we assign our data in variables, what kind of variable we use for particular data type and as per Java script conventions how we can set variable name..?

Var is a universal store function for every kind of data type, so we can store our any type of data as integer, float, chars, strings, boolean etc values into var.

Note : In Java convention is must to do that use second letter of keyword is must In Capital letter. It's good for practice and understand.
Note: [;] sign is must to put in our end of code line or after assign a value into variable.
Note: alert is a default Java function for displaying anything on browser pop up window.

How to store or create variables ?

Syntax
var (default keyword) variable name = "string/chars/integers/boolean" ;
alert(variable name) ; //display assign variable name

Example
var personGreeting = "Hi people ! I am " ;
var personName = "Ankit kalra" ;
var personPhone = +91-7503026828 ;

alert(personGreeting) ; // Hi people ! I am
alert(personName) ; // Ankit kalra
alert(personPhone) ; // +91-7503026828;

also can use alert function with two or more var for display together by using (+ sign) called cascading method.
alert(personGreeting+personName) ; //Hi people ! I am Ankit kalra

Some more data types :

var ten = 10 ; // Integer value
var pi = 3.14 ; // Float or decimal value
var boolean = true/false ; // Boolean value

alert(ten) ; // 10
alert(pi) ; // 3.14
alert(boolean) ; // true / false