console.log(String(console.log('Not undefined'))==='未定義'); console.log(String(console.log('Not undefined'))!=='Not undefined'); [英]console.log(String(console.log('Not undefined')) === 'undefined'); console.log(String(console.log('Not undefined')) !== 'Not undefined');
為什么js變量顯示[object object]但console.log()有效? [英]Why js variable show [object object] but console.log() works?
功能是一個對象嗎? 為什么console.log不顯示可檢查的對象? [英]is function an object? Why console.log does not show inspectable Object?
Javascript,console.log打印prints對象,但屬性未定義 [英]Javascript, console.log prints prints object, but property is undefined
JS 說 object 是未定義的,即使它顯示在 console.log 中 [英]JS says an object is undefined even though it shows with console.log
Object 屬性以點表示法調用,顯示 console.log 'undefined' [英]Object property called with dot notation showing console.log 'undefined'