Javascript - same Date with multiple offset comparison

Question

Need to understand how date works when comparing multiple dates

console.log(new Date('2019-10-10T05:00:00.000+0000') >= new Date('2019-10-10T10:30:00.000+0530')) // true
console.log(new Date('2019-10-10T05:00:00.000+0000') <= new Date('2019-10-10T10:30:00.000+0530')) // true
console.log(new Date('2019-10-10T05:00:00.000+0000') == new Date('2019-10-10T10:30:00.000+0530')) // false
console.log(+new Date('2019-10-10T05:00:00.000+0000') == +new Date('2019-10-10T10:30:00.000+0530')) // true

How come the first two statements returns true and third false. Requesting an explanation/links, please.

Answer 1

In the third comparison:

console.log(new Date('2019-10-10T05:00:00.000+0000') == new Date('2019-10-10T10:30:00.000+0530')) // false

you are just comparing two objects which are not the very same object, hence returns false. MDN explains:

Two distinct objects are never equal for either strict or abstract comparisons.

The fourth comparison:

console.log(+new Date('2019-10-10T05:00:00.000+0000') == +new Date('2019-10-10T10:30:00.000+0530')) // true

forces the conversion to numbers though by using the + sign.

And for the first and second comparisons:

console.log(new Date('2019-10-10T05:00:00.000+0000') >= new Date('2019-10-10T10:30:00.000+0530')) // true
console.log(new Date('2019-10-10T05:00:00.000+0000') <= new Date('2019-10-10T10:30:00.000+0530')) // true

MDN explains the behavior of < <= > >= relational operators:

Each of these operators will call the valueOf() function on each operand before a comparison is made.

so it calls valueOf() function on date objects returning timestamps which are numbers, thus evaluating to true.