在开发项目中有些常用的的实用代码（ps:平时看着无关紧要的，却很容易忘记）

1，在客户端使用Cookie

document.cookie = "key=1";

document.cookie = "name=zhangsan";

cookie中存值形式：key=1,name=zhangsan等

// 刷新、关闭 页面之前，清理cookie中的key值。

window.onbeforeunload = function () {

// alert(document.cookie);

};

//从cookie中获取数据

function getCookie(cookie_name) {

var result = "";

var allcookies = document.cookie;

var cookie_pos = allcookies.indexOf(cookie_name);

if (cookie_pos != -1)              {

cookie_pos += cookie_name.length + 1;

var cookie_end = allcookies.indexOf(";", cookie_pos);

if (cookie_end == -1)              {

cookie_end = allcookies.length;

}

result = unescape(allcookies.substring(cookie_pos, cookie_end));

}

return result;

}

2.在js中读取//读txt文件   使用到的微软插件时：activeObject;

function readFile(filename) {

var fso = new ActiveXObject("Scripting.FileSystemObject");

var f = fso.OpenTextFile(filename, 1);

var s = "";

while (!f.AtEndOfStream)

s += f.ReadLine() + "\n";

f.Close();

return s;

}

后期不断更新中...