1.2.6.2.「typeof」、「instanceof」與搞清楚這是什麼
typeof
告訴你型別是甚麼
instanceof
告訴你型別是甚麼
undefined, null
bug: typeof null是object
empty function
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typeof
告訴你型別是甚麼
instanceof
告訴你型別是甚麼
undefined, null
bug: typeof null是object
empty function
Last updated
Was this helpful?