var meaning in javascript code example

Example 1: how to define variable in javascript

var <variable-name>;

var <variable-name> = <value>;

Example 2: javascript define variable

var variable1 = "some variable content";

Example 3: js what does var mean

Used to create a variable that is globally scoped when not used in a function. 
When it is used in a function, it can only be used in that function and not
outside of it. This statement is comparable to let but more globalized.