What is the difference between null and undefined?

Web Development
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#1
Null Undefined
It is an assignment value which indicates that variable points to no object. It is not an assignment value where a variable has been declared but has not yet been assigned a value.
Type of null is object Type of undefined is undefined
The null value is a primitive value that represents the null, empty, or non-existent reference. The undefined value is a primitive value used when a variable has not been assigned a value.
Indicates the absence of a value for a variable Indicates absence of variable itself
Converted to zero (0) while performing primitive operations Converted to NaN while performing primitive operations