Is Document. Cookie Ever Undefined?
I'm Just Curious If Document. Cookie Can Ever Return Undefined. I Read Quirksmode's Article on Cookies and I Looked at "Is! Document. Cookie Reliable?" but...
I'm just curious if document.cookie can ever return undefined.
I read quirksmode's article on cookies and I looked at "Is !document.cookie reliable?" but they don't explicitly answer this question.
Can document.cookie ever be undefined?
2 Answers
The document.cookie property is defined in DOM Level 2, and implemented in every major browser. It sets/gets a string, which may be an empty string (which is falsey, but not undefined).
No.
You can read the spec here
It throws an error if it's set to a value that doesn't adhere to the spec.
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