js写入cookice值并执行判断输出

<script type="text/javascript">

function setCookie (name, value) {

if (value) {

var days = 1; //定义一天

var exp = new Date();

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

// 写入Cookie, toGMTString将时间转换成字符串

document.cookie = name + "=" + escape(value) + ";expires=" + exp.toGMTString;

}

}

setCookie('aname',1);

setCookie('bname',2);

function getCookie (name) {

var arr,reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)"); //匹配字段

if (arr = document.cookie.match(reg)) {

return unescape(arr[2]);

} else {

return null;

}

}

if(getCookie("aname")){

alert("abc")

}else{

alert("def")

}

</script>