Typescript错误:无法读取未定义的属性X
我创建了一个班级会议的实例:Typescript错误:无法读取未定义的属性X,typescript,Typescript,我创建了一个班级会议的实例: export var meeting: Meetings; //create a meeting instance of Meeting class present into meeting.ts 当我在Meetings类上调用名为“meetForMe()”的函数时: var myMeeting = meeting.meetForMe(email); 我收到这个错误: Cannot read property 'meetForMe' of undefined
export var meeting: Meetings; //create a meeting instance of Meeting class present into meeting.ts
当我在Meetings类上调用名为“meetForMe()”的函数时:
var myMeeting = meeting.meetForMe(email);
我收到这个错误:
Cannot read property 'meetForMe' of undefined
我以这种方式宣布班级会议:
export class Meetings{....}
应先创建对象,然后才能使用:
export var meeting = new Meetings();
在代码中,您只需声明一个“Meetings”类型的变量。您尚未初始化
meeting
变量。尝试导出var会议:会议=新会议()代码>取而代之完善它的工作!我不明白,因为在typescript格式上它不工作。