JS中对Cookie的操作

iteye_8827

于 2011-08-31 11:49:55 发布

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分类专栏： JS 文章标签： cookies

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本文详细介绍了如何在JavaScript中使用setCookie、getCookie和deleteCookie函数来操作浏览器的Cookies，包括设置过期时间、指定路径和域等常用功能。

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/* This function is used to set cookies */
function setCookie(name,value,expires,path,domain,secure) {
document.cookie = name + "=" + escape (value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") + ((secure) ? "; secure" : "");
}

/* This function is used to get cookies */
function getCookie(name) {
var prefix = name + "="
var start = document.cookie.indexOf(prefix)

if (start==-1) {
return null;
}

var end = document.cookie.indexOf(";", start+prefix.length)
if (end==-1) {
end=document.cookie.length;
}

var value=document.cookie.substring(start+prefix.length, end)
return unescape(value);
}

/* This function is used to delete cookies */
function deleteCookie(name,path,domain) {
if (getCookie(name)) {
document.cookie = name + "=" +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
"; expires=Thu, 01-Jan-70 00:00:01 GMT";
}
}