javascript 初回アクセス判定

Posted 2021-05-04

/* sessionStorage
------------------------------------- */
function setSessionStorage(key, value) {
	if (!window.sessionStorage) return;
	try {
		sessionStorage.setItem(key, value);
	} catch (err) {
		console.error(err);
	}
}
function isFirst () {
	var storage = sessionStorage;
	var key = "first";
	var value = "false";
	if (storage.getItem('first') === 'false') {
		return false;
	}else{
		setSessionStorage(key, value);
		return true;
	}
}
firstAccess = isFirst();


/* cookie
------------------------------------- */
function isFirst () {
	if($.cookie("access")){
		return false;
	}else { //初回アクセス
		return true;
	}
}
first = isFirst();
$.cookie("access","true", { expires: 1 });