以下为写的一段代码 当值为-1的时候就是没有cookie

function getCookie(name) {

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

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

return unescape(arr[2]);

else

return null;

}

$('#a1').click(function() {

var a = getCookie("phone");

var b = getCookie("password");

var c_start = document.cookie.indexOf("phone");

var d_start = document.cookie.indexOf("password");

console.log(a);console.log(c_start);

if(c_start == -1) {

window.location.href = 'my1.html'

} else {

if(d_start == -1) {

alert("别。。伪造cookie");

window.location.href = 'http://www.gov.cn/zhengce/2014-03/21/content_2643049.htm'

} else {

window.location.href = 'my1.html'

}

}

})