Quick Reference
The const statement declares a variable (container for storing information) with an immediately defined value that will not change.
It is used in the following:
- A new Array
- A new Object
- A new Function
- A new RegExp
<!-- html element to place output -->
<p id="my_output"></p>The following uses the class statement to create a new class called “car”.
// variable
const my_cars = ['Lamborghini', 'Ferrari', 'Maserati', 'Alfa Romeo'];
// output to HTML element
document.getElementById('my_output').innerHTML = my_cars;Output
Lamborghini,Ferrari,Maserati,Alfa RomeoSyntax
const name = value;JavaScript Notes:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.