Quick Reference
This is a quick reference list of JavaScript object methods and properties with examples of how they are used.
- JavaScript – Object constructor PropertyThe Object constructor property returns the function that created the Object prototype.
- JavaScript – Object.keys() MethodThe Object.keys() method returns an array iterator object with the keys of an object, without changing the original object.
- JavaScript – Object prototype PropertyThe Object prototype property allows the addition of new properties and methods to objects.
- JavaScript – Object toString() MethodThe Object toString() method returns an object as a string or “” if it cannot return a string.
- JavaScript – Object valueOf() MethodThe Object valueOf() method returns the primitive value of an object, or the object itself if it has no primitive.
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.