<html>
<head>
<title>Hello World</title>
<meta charset="utf-8">
<script languang="javascript">
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
// if cookie exists
offset += search.length
// set index of beginning of value
end = document.cookie.indexOf(";", offset);
// set index of end of cookie value
if (end == -1)
end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(offset, end))
}
}
return returnvalue;
}
function loadPopup(){
console.log(get_cookie("firstload"));
if (get_cookie("firstload")===""){
alert("This is the first time you run this program!");
document.cookie="firstload=true"
}
}
</script>
</head>
<body οnlοad="loadPopup()">
</body>
</html> 推断第一次载入
程序员文章站
2022-07-11 15:33:47
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