<body>
<button>点击一下</button>
<h1></h1>
<script>
var btn = document.querySelector("button");
btn.onclick = function () {
var n = prompt("输入cookie的name")
var bb = getCookie(n);
document.querySelector("h1").innerHTML = bb;
}
function getCookie(n) {
var str = document.cookie;
var arr = str.split("; ")
for (var i = 0; i < arr.length; i++) {
var narr = arr[i].split("=");
if (narr[0] == n) {
return narr[1]
}
}
}
</script>
</body>