Quick Reference
The ternary (conditional) operator assigns a value to a variable based on a condition.
<!-- html element to place output -->
<p id="my_output"></p>The ternary contains three parts: the test (my_age >= 18) followed by a ?, and then the two output items separated by a :. The first output item is used if the test is true and the second if the test is false.
// variables
let my_age = 54;
let voting_age = '';
// conditional
voting_age = (my_age >= 18) ? 'Pass':'Fail';
// output to HTML element
document.getElementById('my_output').innerHTML = voting_age;Output
PassJavaScript 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.