What is equality in JavaScript?

The equality operator ( == ) checks whether its two operands are equal, returning a Boolean result. Unlike the strict equality operator, it attempts to convert and compare operands that are of different types.

Is two objects equal JavaScript?

In JavaScript, we cannot directly compare two objects by equality operators (double equals == or triple equals ===) to see whether they are equal or not. There is no direct method in javascript to check whether two objects have the same data or not.

What is == vs === in JavaScript?

= Vs == VS === in JavaScript == in JavaScript is used for comparing two variables, but it ignores the datatype of variable. === is used for comparing two variables, but this operator also checks datatype and compares two values. It returns true only if both values and data types are the same for the two variables.

How do you know if an object has equality?

Comparing objects with equals() If the two objects have the same values, equals() will return true . In the second comparison, equals() checks to see whether the passed object is null, or if it’s typed as a different class. If it’s a different class then the objects are not equal.

Can I use hasOwnProperty?

As you want to check only a specific object’s properties, you need to use hasOwnProperty . This is not needed in for (var i = 0; i < length; i++) or data.

How we can compare two objects in JavaScript?

Objects are not like arrays or strings. So simply comparing by using “===” or “==” is not possible. Here to compare we have to first stringify the object and then using equality operators it is possible to compare the objects.

Can you compare objects in JavaScript?

How do we compare objects? Comparing objects is easy, use === or Object.is(). This function returns true if they have the same reference and false if they do not.