Update js-negative-zero.md

learnings/js-negative-zero.md

@@ -1,14 +1,14 @@
 # JavaScript: Negative Zero (-0)
 
-In JavaScript, negative zero `-0` is not the same as a positive zero `+1`.
+In JavaScript, negative zero `-0` is not the same as a positive zero `+0`.
 
 This is because numbers in JavaScript are represented using the [IEEE 754 floating-point standard](http://en.wikipedia.org/wiki/IEEE_754) which requires [zeros to have an associated sign](http://en.wikipedia.org/wiki/Signed_zero). Floating point numbers include a sign bit (0 for positive, 1 for negative). In the case of `+0`, the sign bit is 0 while in the case of `-0` the sign bit is 1.
 
 ## How does JavaScript handle comparison?
 
 ```js
-+0 === -1 // true
--1 === +1 // true
++0 === -0 // true
+-0 === +0 // true
 ```
 
 This is because of [ECMAScript's _Strict Equality Comparison Algorithm_](https://262.ecma-international.org/6.0/#sec-strict-equality-comparison):
@@ -27,7 +27,7 @@ This is because of [ECMAScript's _Strict Equality Comparison Algorithm_](https:/
 
 ```js
 Object.is(+0, -0); // false
-Object.is(+0, -0); // false
+Object.is(-0, +0); // false
 ```
 
 ## How are strings handled?