Test1.html：設置數據
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鳥教程(runoob.com)</title>
<script>
function clickCounter() {
if(typeof(Storage) !== "undefined") {
if (localStorage.clickcount) {
localStorage.clickcount = Number(localStorage.clickcount)+1;
localStorage.setItem("clickCount",localStorage.clickcount);
} else {
localStorage.clickcount = 1;
}
document.getElementById("result").innerHTML = "你在按鈕上已經點擊了 " + localStorage.clickcount + " 次。";
} else {
document.getElementById("result").innerHTML = "Sorry, your browser does not support web storage...";
}
}
</script>
</head>
<body>
<p><button οnclick="clickCounter()" type="button">點我!</button></p>
<div id="result"></div>
<p>點擊按鈕查看數字會自動增加。</p>
<p>關閉瀏覽器，重新打開這個頁面點擊按鈕，可以看到之前的數據是有保留的。</p>
</body>
</html>
如圖點了十五次：
關閉瀏覽器【未清瀏覽器數據的情況下】，打開Test2.html：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>菜鳥教程(runoob.com)</title>
<script>
function clickCounter() {
if(typeof(Storage) !== "undefined") {
var clickCount = localStorage.getItem("clickCount");
document.getElementById("result").innerHTML = "你在按鈕上已經點擊了 " + clickCount + " 次。";
}
}
</script>
</head>
<body>
<p><button οnclick="clickCounter()" type="button">點我!</button></p>
<div id="result"></div>
</body>
</html>
點擊之後，直接顯示點擊了15次：
