02. Javascript snippets - Cookie(쿠키) 읽기, 쓰기, 삭제

Cookie 쿠키 읽기, 쓰기,  삭제

/**

 * 쿠키 읽기

 * @param name 키

 * @returns

 */

function readCookie(name) {

    var nameEQ = name + "=";

    var ca = document.cookie.split(';');

    for(var i=0;i < ca.length;i++) {

        var c = ca[i];

        while (c.charAt(0)==' ') c = c.substring(1,c.length);

        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);

    }

    return null;

}

/**

 * 쿠키 쓰기

 * @param name  키

 * @param value 값

 * @param days 날짜

 */

function writeCookie(name,value,days) {

    var expires = "";

    if (days) {

        var date = new Date();

        date.setTime(date.getTime() + (days*24*60*60*1000));

        expires = "; expires=" + date.toUTCString();

    }

    document.cookie = name + "=" + value + expires + "; path=/";

}

/**

 * 쿠키 삭제

 * @param name

 */

function deleteCookie(name) {

    createCookie(name,"",-1);

}