ES6 自定义错误并使用默认信息

function MyError(message) {
   this.name = 'CustomError';
   this.message = message || 'Error raised with default message';
}
try {
   throw new MyError();
} catch (e) {  
   console.log(e.name);      
   console.log(e.message);  // 'Default Message'
}