HTML5 ? ???
HTML5 ? ???
HTML5 ? ???? ???? ? ?? ?? ?? ?????.
HTML5 ? ????? ??????
HTML5? ???? ???? ?? ???? ??? ??? ? ????.
???? ?? ????? ??? ??????. ??? ? ????? ?? ???? ??? ???. ???? ??? ???? ??? ???? ???? ???? ??? ?? ???? ?????. ?? ???? ??? ??? ?? ?? ?? ?? ???? ??? ?? ????.
???? ?/? ??? ????, ????? ???? ?? ??????? ???? ??? ? ????.
localStorage ? sessionStorage
?????? ???? ???? ?? ? ?? ??? ??? ????.
localStorage - ?? ?? ?? ??? ??
sessionStorage - ???? ?? ??
? ???? ???? ?? ????? localStorage ? sessionStorage? ????? ???? ???:
if(typeof(Storage)!=="undefined")
{
// Yes! localStorage and sessionStorage support!
// Some code.....
}
else
{
// Sorry! No web storage support..
}localStorage ??
???? ????? ?? ??? ????. localStorage ??? ??. ???? ?? ?, ?? ? ?? ?? ???? ?? ??? ? ????.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
<div id="result"></div>
<script>
if(typeof(Storage)!=="undefined")
{
localStorage.lastname="Smith";
document.getElementById("result").innerHTML="Last name: " + localStorage.lastname;
}
else
{
document.getElementById("result").innerHTML="Sorry, your browser does not support web storage...";
}
</script>
</body>
</html>?? ?:
key="lastname" ? value="Smith"? ???? localStorage ?/? ? ??
? ? " lastname" ?? ?? id="result"
? ??? ???? ?????. ?: ?/? ?? ????? ???? ???? ??? ?? ? ??? ??? ? ????.
?? ???? ???? ??? ??? ??? ?????. ??? ??? ?? ?? ???? ?????.
<!DOCTYPE html>
<html>
<head>
<script>
function clickCounter()
{
if(typeof(Storage)!=="undefined")
{
if (localStorage.clickcount)
{
localStorage.clickcount=Number(localStorage.clickcount)+1;
}
else
{
localStorage.clickcount=1;
}
document.getElementById("result").innerHTML="You have clicked the button " + localStorage.clickcount + " time(s).";
}
else
{
document.getElementById("result").innerHTML="Sorry, your browser does not support web storage...";
}
}
</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">點(diǎn)我</button></p>
<div id="result"></div>
<p>單擊該按鈕查看計(jì)數(shù)器增加.</p>
<p>關(guān)閉瀏覽器選項(xiàng)卡(或窗口),再試一次,計(jì)數(shù)器將繼續(xù)計(jì)數(shù)(不是重置)。</p>
</body>
</html>sessionStorage ??
sessionStorage ???? ?? ??? ?? ???? ?????. ???? ???? ?? ??? ???? ?????.
sessionStorage? ??? ????? ??: :
<!DOCTYPE html>
<html>
<head>
<script>
function clickCounter()
{
if(typeof(Storage)!=="undefined")
{
if (sessionStorage.clickcount)
{
sessionStorage.clickcount=Number(sessionStorage.clickcount)+1;
}
else
{
sessionStorage.clickcount=1;
}
document.getElementById("result").innerHTML="You have clicked the button " + sessionStorage.clickcount + " time(s) in this session.";
}
else
{
document.getElementById("result").innerHTML="Sorry, your browser does not support web storage...";
}
}
</script>
</head>
<body>
<p><button onclick="clickCounter()" type="button">Click me!</button></p>
<div id="result"></div>
<p>單擊該按鈕查看計(jì)數(shù)器增加.</p>
<p>關(guān)閉瀏覽器選項(xiàng)卡(或窗口),再試一次,計(jì)數(shù)器將繼續(xù)計(jì)數(shù)(不是重置)。</p>
</body>
</html>
