JS语法---异常和模块化

异常

抛出异常

 

//捕获异常
try{
    // throw new Error(‘new error‘);
    // throw new ReferenceError(‘new error‘);
    // throw new 1; 
    //下面类型不报错，正常抛出
    // throw new Number(100);
    // throw ‘not ok‘;
    // throw [1,2,3];
    // throw {‘a‘:1};
    throw () => {};
}catch(error){
    console.log(error)
    console.log(error.constructor.name);
}finally{
    console.log(‘===end===‘)
}

模块化

ES6模块化