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834 B
834 B
Javascript Fundamentals Review
Primative Data Types
Javascript has several basic data types:
'this is a string' // string (text)
123 // number (int)
1.2 // number (float)
true // boolean
false // boolean
Variables
Declaring variables is done with the keyword var. Variables are dynamically typed (decided during execution) since there is no compilation process.
var foo = 'string';
var bar = 1;
Reassignment is done by omitting the var keyword. Variables are loosely typed (can be reassigned to any other value, regardless of their initial value)
var foo = 'a string';
foo = 123.4;