javascript学习(4)cookie的使用

具体用法:

<script type="text/javascript">

function writecookie() {

var today=new Date();

today.setDate(today.getDate() + 1);

//document.cookie = 'name=张三的歌;expires='+today.toGMTString();

document.cookie = 'username=张三的歌;expires=' + today.toGMTString();

//document.cookie = 'name=张三的歌;expires=' + today.toLocaleString();//此类型的过期时间不支持

}

function getcookie() {

//读cookie

var cookie = document.cookie;

alert(cookie);

var array = cookie.split(';');

for (var item in array) {

var array1 = array[item].split('=');

if (array1[item] == 'username') {

alert(array1[1]);

}

}

//通过截取字符串的方式来获取cookie的值

// var index = cookie.indexOf('=');

// alert(cookie.substr(index + 1));

}

</script>

<input id="Button1" type="button" value="写cookie" onclick="writecookie();" />

<br />

<input id="Button2" type="button" value="读cookie" onclick="getcookie();" />