I Programmer

JavaScript Objects With Value - valueOf and toString

JavaScript objects have a default value. In fact, they have two default values depending on the context. You can easily add default values of your choice to a custom ...
GitHub

index.md

The toString() method of {{jsxref("Object")}} instances returns a string representing this object. This method is meant to be overridden by derived objects for custom type coercion logic. A string ...
I Programmer

JavaScript Objects With Value - valueOf and toString

JavaScript objects have a default value. In fact, they have two default values depending on the context. You can easily add default values of your choice to a custom ...
blog.csdn

javascript(7) toString()方法，出现Undefined错误

如果将对象直接打印的话，就会出现[Object Object]，实际上这个时候对象会调用toString()方法，如果没有这个方法，就会出现[Object Object]. 如果希望有打印出的东西，我们可以手动添加toString()方法 ...