JS: Object.is

JS: Object.is

By Xah Lee. Date: . Last updated: .

New in ES2015.

Object.is ( value1, value2 )

similar to value1 === value2, except when values are signed zeroes and NaN.

console.log( NaN === NaN); // false
console.log( Object.is (NaN, NaN) ); // true

console.log( -0 === +0); // true
console.log( Object.is (-0, +0) ); // false

JS Object and Inheritance

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  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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