javascript - 用简洁的方法在JavaScript中词汇化

下面是我的代码并作解释。
我有一个其成员函数和变量如下的类。 functionOne和functionTwo是简洁的方法。

function MyUtils() {
    this.actions = {
        functionOne(param1, param2) {
            console.log('This is first function which is not in action');
        },
        functionTwo(param1, param2) {
            console.log('This is second function calling function three');
            //HOW DO I CALL functionThree HERE?
            // I tried doing - this.functionThree() but not working
        }
    }

    this.functionThree() {
        console.log('This is third function');
    }
}

如果调用了函数2，那么我要在其中调用函数3吗？

最佳答案

您可以在没有此关键字的情况下执行此操作，这会在javascript中使用闭包语法：

function MyUtils() {

    function functionThree() {
        console.log('This is third function');
    }

    this.actions = {
        functionOne(param1, param2) {
            console.log('This is first function which is not in action');
        },
        functionTwo(param1, param2) {
            console.log('This is second function calling function three');
            //HOW DO I CALL functionThree HERE?
            // I tried doing - this.functionThree() but not working
            functionThree();

        }
    }


}

这是repl的输出：（找到here）

clear
Native Browser JavaScript

This is second function calling function three
This is third function
=> undefined