JavaScript- switch문

swich(일치하는것을 찾을때 사용하면 편함)

        - swich(변수){  //변수와 동일한 값을 찾아 실행한다.
            case 값1:
                변수와 값1이 같을경우 실행할 문장;
                ...
                break

            case 값2:
                변수와 값2이 같을경우 실행할 문장;
                ...
                break

            case 값3:
                변수와 값1이 같을경우 실행할 문장;
                ...
                break
            ...
            default:
                변수와 값이 다를경우 실행할 문장;
        }