cookiejs文件编写,js生成cookie

本文目录一览：

• 1、怎么用JS建立一个cookie?
• 2、用JS编写cookie传值问题
• 3、用原js写获取本地cookie的方法
• 4、js操作cookie
• 5、用JS编写Cookies保存用户名和密码代码

怎么用JS建立一个cookie?

01 script language=”JavaScript” type=”text/javascript”

02 !–

03 document.cookie=”id=12″; // 创建cookie的键和值

04 document.cookie=”user=yx”; // 创建cookie的键和值

05 var strCookie=document.cookie; // 获取该域名下的所有cookie值

06 alert(strCookie); // 显示所有的cookie的键与值

07 //–

08 /script

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用JS编写cookie传值问题

JS设置cookie:

假设在A页面中要保存变量username的值(“jack”)到cookie中,key值为name，则相应的JS代码为：

document.cookie=”name=”+username;

JS读取cookie:

假设cookie中存储的内容为：name=jack;password=123

则在B页面中获取变量username的值的JS代码如下：

var username=document.cookie.split(“;”)[0].split(“=”)[1];

用原js写获取本地cookie的方法

get(cookie){

    let  cookieValue=null;

    let  cookies=document.cookie.split(‘;’);

    for(var i=0;icookies.length;i++){

          let cookie=cookies[i].trim();去掉前后的空格

          if(cookie.substring(0,name.length+1)==(name+’=’)){

              cookieValue=decodeURICompoent(cookie.substring(name.length+1)）;

              break

          }

      }

    return cookieValue;

  }、

js操作cookie

//网页引用

script language=”javascript”src=”./js/cookie.js”/script

//取cookie值

var hrckdeptcode = Cookie(“hrckdeptcode”);

var hrckdeptname = Cookie(“hrckdeptname”);

//保存cookie值

setCookie(“hrckdeptcode”, deptcode, expdate, “/”, null, false);

setCookie(“hrckdeptname”, deptname, expdate, “/”, null, false);

把下面的脚本放到 cookie.js 文件里

var expdate= new Date();

function getCookieVal (offset) {

var endstr = document.cookie.indexOf (“;”, offset);

if (endstr == -1) endstr = document.cookie.length;

return unescape(document.cookie.substring(offset, endstr));

}

function Cookie (name) {

var arg = name + “=”;

var alen = arg.length;

var clen = document.cookie.length;

var i = 0;

while (i clen) {

var j = i + alen;

if (document.cookie.substring(i, j) == arg) return getCookieVal (j);

i = document.cookie.indexOf(” “, i) + 1;

if (i == 0) break;

}

return null;

}

function setCookie (name,value,expires,path,domain,secure) {

expdate.setTime(expdate.getTime() + (24*60*60*1000*365));

document.cookie = name + “=” + escape (value) +

((expires) ? “; expires=” + expires.toGMTString() : “”) +

((path) ? “; path=” + path : “”) +

((domain) ? “; domain=” + domain : “”) +

((secure) ? “; secure” : “”);

}

function deleteCookie(name) {

expdate = new Date();

expdate.setTime(expdate.getTime() – (86400 * 1000 * 1));

setCookie(name, “”, expdate);

}

用JS编写Cookies保存用户名和密码代码

//创建cookie

function createCookie(name,value,days)

{

if (days)

{

var date = new Date();

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

var expires = “; expires=”+date.toGMTString();

}

else var expires = “”;

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

}

//读取cookie值

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;

}

//清空cookie

function eraseCookie(name)

{

createCookie(name,””,-1);

}