Java 脚本方法在 JSFiddle 中不起作用



非常简单的问题。几天前我刚开始学习JavaScript,我正在使用JSFiddle来运行和测试我的代码。我有一个简单的方法,我正在尝试在JSFiddle中运行,但不确定为什么它没有运行。任何帮助将不胜感激。

var person = {
    firstName: "John",
    lastName: "Doe",
    fullName: function () {
        return this.firstName + " " + this.lastName;
    }
}
person.fullName();

你提出的代码应该运行得很好,但是在下面的评论中看看你的函数fullName实际在做什么:

var person = {
  firstName: "John",
  lastName: "Doe",
  fullName: function() {
    // notice you are returning a string value
    return this.firstName + " " + this.lastName;
  }
};
// store the value you are returning in a variable
var personFullName = person.fullName();
// print out full name to the console
console.log(personFullName);

查看此资源以获取return关键字和快乐编码!

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return

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