網摘Why Does JavaScript Have Both Null and Undefined? | by Taha Jiruwala | Nov, 2022 | JavaScript in Plain Englishjavascript.plainenglish.io↗ It didn’t explain exactly ‘why’… It didn't explain exactly 'why'... https://javascript.plainenglish.io/why-does-javascript-have-both-null-and-undefined-6a42fcca9301