[Javascript] Manage application state with Immutable.js

Learn how immutable.js data structures is different from native iterable Javascript data types and why they provide an ex Cellent Foundation on which to build your application ' s state.

Instead of them being mutable, they ' re always immutable, meaning they don ' t change from underneath. The reference to them can change, but the data inside them cannot, which means you can build predictable and reliable stat E models on top of them. It becomes a lot easier to manage your application ' s state.

console.clear (); const ARY= ["Todo1", "Todo2"];const Ary2=Ary;console.log (ary[0]);//Todo1ary2[0] = "done1"; Console.log (ary[0]);//done1//Immutablefunctionupdatestate (immutable, POS, value) {returnImmutable.set (pos, value);} Const Immutablestate= Immutable.list (["Foo1", "Foo2"]); Const IMMUTABLESTATE2= Immutablestate.set (0, "bar1"); Console.log (Immutablestate.get (0));//foo1Console.log (immutablestate2.get (0));//bar1

Every time you use Set () to set a new value, immutable would return a new array.

[Javascript] Manage application state with Immutable.js