Fastest way to compare 2 objects in js

Which is the fastest way to compare 2 objects in javascript?

For example I have these 2 objects:

a = [{'name': 'john', 'age': 22}, {'name': 'mike', 'age': 23}, {'name': 'anne', 'age': 12}, {'name': 'dan', 'age': 29}, {'name': 'jane', 'age': 34}]
b = [{'name': 'john', 'age': 22}, {'name': 'anne', 'age': 12}]


Normally, I would do this:

for (var i = 0; i < a.length; i++) {
for (var j = 0; j < b.length; j++) {
console.log(a) // => [{'name': 'john', 'age': 22}, {'name': 'anne', 'age': 12}]
}
}


This is taking too long, is it there another way faster? Thank you for your time!

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