Javascript Equal Operations Anomalies

I'm working on a lecture about hard to understand JavaScript code and of course on of the weak point of JavaScript is knowing what == / === will return. I found this great answer i

Solution 1:

comparing two "equal" string objects will be falsy

I've highlighted the important word above. Two object references are never equal to each other unless they refer to exactly the same object.

You're creating two new instances of String. That's two separate objects, even if they do have the same string value.

var s1 = newString("abc"),
    s2 = newString("abc");

s1 === s1; // true
s1 === s2; // false

This is summarised in the spec by the following line in both the abstract equality algorithm and the strict equality algorithm:

Return true if x and y refer to the same object. Otherwise, return false.