变量/参数未定义
变量/参数未定义
提问于 2021-01-15 15:01:01
function user(name1, age, country) {
this.name1 = name1;
this.age = age;
this.country = country;
}
user.prototype.yourName = function() {
console.log(`Your Name Is ${name1}`);
}
user.prototype.yourAge = function() {
console.log(`Your Age Is ${age} & Your Age In Days Is ${age*365}`);
}
user.prototype.yourCountry = function() {
console.log(`Your Country Is ${country}`);
}
let firstUser = new user('Any Name', 'Any Age', 'Any Country');
firstUser.yourName(); //name1 Is Not Defined
firstUser.yourAge(); //age Is Not Defined
firstUser.yourCountry(); //country Is Not Defined
我不知道问题出在哪里！它一直在说name1或年龄或国家没有定义...
Stack Overflow用户
回答已采纳
发布于 2021-01-15 15:04:09
在变量前添加this关键字，以引用调用该方法的对象的实例变量
function user(name1,age,country){
this.name1=name1;
this.age=age;
this.country=country;
}
user.prototype.yourName=function(){
console.log(`Your Name Is ${this.name1}`);
}
user.prototype.yourAge=function(){
console.log(`Your Age Is ${this.age} & Your Age In Days Is ${this.age*365}`);
}
user.prototype.yourCountry=function(){
console.log(`Your Country Is ${this.country}`);
}
let firstUser=new user('Any Name', 20 ,'Any Country');
firstUser.yourName();//name1 Is Not Defined
firstUser.yourAge();//age Is Not Defined
firstUser.yourCountry();//country Is Not Defined
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/65731752
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