关于JS中的对象问题

Question

今天看到书上讲到JS的对象，有个示例不是很明白var myObject = {};myObject[myObject] = "foo";myObject["[object Object]"];//foo,这里的[object Object]等价于{}吗？

Answer 1

var myObject = {};

console.log(myObject.toString());//[object Object]

myObject[myObject] = "foo";

console.log(myObject["[object Object]"]);//foo,这里的[object Object]等价于{}吗？

console.log(myObject.toString());//[object Object]

for(var i in myObject){

    console.log(i);//[object Object]

}

//从以上结果可以看出：不管这个对象是什么，转成字符串后都是"[object Object]""