how to initialize a class object in javascript

问题

I have a java script class say "myjavascript.js". I have the following class

var myClass= function () {
        this.property2 = '';
        this.property3 = '';
        this.property4 = '';
        this.property5 = '';

        this.say() = function () {
            alert('Say Hello');
        }

I have a function which is triggered on some event.

function myFunction(){
var myClassObj= new myClass();
myClassObj.property2 = 'property2' ;
myClassObj.property3 = 'property2' ;
myClassObj.property4 = 'property2' ;
myClassObj.property5 = 'property2 ';
myClassObj.say();
}

On triggering function I am getting the this error

Uncaught TypeError: undefined is not a function

Keep in mind both are in the same file.

回答1:

this.say() is the error. You are calling the function, not defining it.

 this.say = function () {
            alert('Say Hello');
        }

来源：https://stackoverflow.com/questions/26550413/how-to-initialize-a-class-object-in-javascript