复制代码 代码如下:

var cookieName = \"cookie名字\";
var cookieValue = null;//返回cookie的value值
if (document.cookie && document.cookie != \'\') {
var cookies = document.cookie.split(\';\');//将获得的所有cookie切割成数组
for (var i = 0; i < cookies.length; i++) {
var cookie = cookies[i];//得到某下标的cookies数组
if (cookie.substring(0, cookieName.length + 2).trim() == cookieName.trim() + \"=\") {//如果存在该cookie的话就将cookie的值拿出来
cookieValue = cookie.substring(cookieName.length + 2, cookie.length);
break
}
}
}
if (cookieValue != \"\" && cookieValue != null) {//如果存在指定的cookie值
alert(cookieValue);
} else {<span style=\"font-family: Arial, Helvetica, sans-serif;\">//如果cookie的值是空</span>
alert(\"not cookie!!!\");
}

复制代码 代码如下:

//去除空格
String.prototype.trim = function () {
return this.replace(new RegExp(\"(^[\\\\s]*)|([\\\\s]*$)\", \"g\"), \"\");
}