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js对cookie的操作,包括增,取,删

在其他人都开会到时间里,我偷偷摸哦的试了一下cookie,唉,从来没有用过cookie,慢慢的知识忘光了,还好这次偷偷摸摸的做出来了,虚,大家都别出声啊

<!DOCTYPE html><html><head><meta charset="utf-8" /><title>cookie</title></head><body><input type="text" /><input type="text" /><input type="submit" /><button>释放cookie</button></body></html><script type="text/javascript">var t=document.getElementsByTagName("input")[0];var p=document.getElementsByTagName("input")[1];var b=document.getElementsByTagName("input")[2];var bb=document.getElementsByTagName("button")[0];bb.onclick=function(){    alert(getCookie("password"));}b.onclick=function(){    var n=t.value;    var s=p.value;    setCookie("username",n,5000)    setCookie("password",s,5000)    delCookie("username")}function setCookie(n,v,t){//n==name,v==value,t=time(毫秒)    var d=new Date();    d.setTime(d.getTime()+t);    document.cookie=n+"="+escape(v)+" ;expires="+d.toGMTString();}function getCookie(n){    if(document.cookie){        var c=document.cookie;        var a=c.split("; ");                for(var i=0;i<a.length;i++){            var aa=a[i].split("=");            if(aa[0]==n){                return aa[1];            }        }    }}function delCookie(n){//n==name    setCookie(n,null,-100)}</script>

 

js对cookie的操作,包括增,取,删