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webstorage.html
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webstorage.html
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<!DOCTYPE html>
<html>
<body>
<div id="lsResult"></div>
<div id="ssResult"></div>
<script>
var localDiv = document.getElementById("lsResult")
, sessionDiv = document.getElementById("ssResult")
, not_defined = function (value) { var ud; return value === ud; }
;
if (localStorage === null) {
localDiv.innerHTML = "Error: localStorage === null";
}
else if (not_defined(localStorage)) {
localDiv.innerHTML = "localStorage is not supported";
}
else {
if (not_defined(localStorage.count)) {
localDiv.innerHTML = "localStorage.count not defined, setting to 1";
localStorage.count = 1;
}
else {
localStorage.count = parseInt(localStorage.count) + 1;
localDiv.innerHTML = "localStorage.count = " + localStorage.count;
if (parseInt(localStorage.count) > 3) {
localDiv.innerHTML += " Deleting localStorage.count";
delete localStorage.count;
}
}
}
if (sessionStorage === null) {
sessionDiv.innerHTML = "Error: sessionStorage === null";
}
else if (not_defined(sessionStorage)) {
sessionDiv.innerHTML = "sessionStorage is not supported";
}
else {
if (not_defined(sessionStorage.count)) {
sessionDiv.innerHTML = "sessionStorage.count not defined, setting to 1";
sessionStorage.count = 1;
}
else {
sessionStorage.count = parseInt(sessionStorage.count) + 1;
sessionDiv.innerHTML = "sessionStorage.count = " + sessionStorage.count;
}
}
</script>
</body>
</html>