TypeError: "x" has no properties
Message
JavaScript
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TypeError: null has no properties TypeError: undefined has no properties
Error type
What went wrong?
Both, null and undefined, have no properties you could access.
Examples
JavaScript
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null.foo; // TypeError: null has no properties undefined.bar; // TypeError: undefined has no properties
See also
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/javascript/reference/errors/no_properties