构造函数已经是老生常谈的事情了。这里讲一些比较基础的东西。 先看下一个例子 function Book(name) { if (!(this instanceof Book)) { // the constructor was called without "new". return new Book(name); } } var myBook = Book(name); var myBook1 = Book(name); myBoo...
构造函数已经是老生常谈的事情了。这里讲一些比较基础的东西。 先看下一个例子 function Book(name) { if (!(this instanceof Book)) { // the constructor was called without "new". return new Book(name); } } var myBook = Book(name); var myBook1 = Book(name); myBoo...
