JS: Object.fromEntries

JS: Object.fromEntries

By Xah Lee. Date: . Last updated: .

New in ES2019.

Object.fromEntries(iterable)

Return a object with key value pairs from iterable iterable. The iterable must have pairs as element, such as nested array, or map. [see JS: the Map Object Tutorial]

[see JS: Iterable]

[see JS: List Properties]

const t1 = [["a", 3], ["b", 4]];
const t2 = Object.fromEntries(t1);

console.log ( t2 );
// {"a":3, "b":4};

JS Object and Inheritance

  1. Object Overview
  2. Object Type
  3. Find Object's Type
  4. Prototype Chain
  5. Create Object
  6. Object Literal Expr
  7. Create Object with Parent X
  8. Get/Set Parent
  9. Show Prototype Chain
  10. Prevent Adding Property
  11. Clone Object
  12. Test Object Equality
  13. Add Method to Prototype
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