console.log(String(console.log('Not undefined'))==='未定义'); 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');
为什么js变量显示[object object]但console.log()有效? [英]Why js variable show [object object] but console.log() works?
功能是一个对象吗? 为什么console.log不显示可检查的对象? [英]is function an object? Why console.log does not show inspectable Object?
Javascript,console.log打印prints对象,但属性未定义 [英]Javascript, console.log prints prints object, but property is undefined
JS 说 object 是未定义的,即使它显示在 console.log 中 [英]JS says an object is undefined even though it shows with console.log
Object 属性以点表示法调用,显示 console.log 'undefined' [英]Object property called with dot notation showing console.log 'undefined'