Syntax - Tasty Web Development Treats
20 JavaScript Array and Object Methods to make you a better developer
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Show notes
Wes and Scott rattle through ~20 different Object and Arra Methods that will make you a better JavaScript developer.
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Show Notes For the docs for all these, just google mdn and the method you are looking for 😃
3:00
Why are these great?
They are chainable
Immutable
5:30
.filter()
Truthy or Falsy
8:00
.map()
10:00
.reduce() - returns any shape! filter, create a new shape, add up numbers...
14:30
.forEach()
Side effects
16:00
.some()
can be used as a short circuit forEach
25:00
.every()
.includes() (why not contains?)
26:00
Array.from()
Array.from() takes a secondary map arg
Array.of()
29:00
Object.values()
Object.keys()
Object.entries()
32:00
Array spread - converts iterable to array
Array spread - Concats arrays
Array Spread + Slice. Don't splice - remove an item from an array.
34:00
Object Spread
37:00
Function Rest
39:00
Object.freeze()
40:00
Object.seal()
41:00
Object.assign() - no longer needed because you can object spread
Reference vs Copy in JavaScript
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