js 读写 cookie

写  cookie_write.html

    <script language="JavaScript" type="text/javascript">
        function addCookie(objName, objValue, objHours) {
        //添加cookie
            var str = objName + "=" + escape(objValue);
            if (objHours > 0) {
                //为0时不设定过期时间，浏览器关闭时cookie自动消失
                var date = new Date();
                var ms = objHours * 3600 * 1000;
                date.setTime(date.getTime() + ms);
                str += "; expires=" + date.toGMTString();
            }
            document.cookie = str;
            alert("添加cookie成功");
        }
        addCookie("keyword","moto",1);
    </script>

读 cookie_read.html

    <script language="JavaScript" type="text/javascript">
        function getCookie(objName) {//获取指定名称的cookie的值
            var arrStr = document.cookie.split("; ");
            for (var i = 0; i < arrStr.length; i ++) {
                var temp = arrStr[i].split("=");
                if (temp[0] == objName) return unescape(temp[1]);
            }
        }
        var keyword_js = getCookie("keyword");
        alert("keyword_js = " + keyword_js);
    </script>