The base ES6 - comparison of the two values are equal Object.is ()

Compare two values ​​are equal we can use == or === judge absolutely equal use. They have disadvantages, the former will be automatically converted to data type, which is not equal NaN itself equal to the negative and positive 0 0

+0 == -0 //true

+0 === -0 //true

But these two things are not the same

Another example:

NaN == NaN // false

But they are a thing

In such cases, you can use Object.is () method, two parameters is to compare things, such as:

Object.is (, at) // true

Object.is(+0,-0) //false

In most cases, or may be used to judge whether == === or two values ​​are equal