实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
AخA
 
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<!DOCTYPE html>
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<html>
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<head>
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<script>
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function clickCounter()
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{
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if(typeof(Storage)!=="undefined")
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  {
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  if (sessionStorage.clickcount)
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    {
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    sessionStorage.clickcount=Number(sessionStorage.clickcount)+1;
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    }
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  else
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    {
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    sessionStorage.clickcount=1;
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    }
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  document.getElementById("result").innerHTML="You have clicked the button " + sessionStorage.clickcount + " time(s) in this session.";
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  }
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else
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  {
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  document.getElementById("result").innerHTML="Sorry, your browser does not support web storage...";
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  }
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}
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</script>
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</head>
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<body>
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<p><button onclick="clickCounter()" type="button">Click me!</button></p>
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<div id="result"></div>
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<p>Click the button to see the counter increase.</p>
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<p>Close the browser tab (or window), and try again, and the counter is reset.</p>
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</body>
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</html>