What is the difference between "= =" and "= = =" in JavaScript?

Source: Internet
Author: User

in JavaScript, the difference between "= =" and "= = =" is determined by the type of data:

    1. For basic data types such as String/number, there is a difference between different types of comparisons, and the "= =" is converted to the same data type and then compared, and if the data types on both sides of "= = =" are inconsistent, then the data type is not converted. Values of the same data type are compared, and the action of "= =" and "= = =" is the same.

    2. For advanced data types such as array/object, "= =" and "= = =" are no different, when the data of an array type is compared with the data of an object type, "= =" and "= = =" function, because it is a comparison of the pointer address.

    3. In summary, for the underlying data type, "= =" and "= = =" will be different.

What is the difference between "= =" and "= = =" in JavaScript?

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