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使用HTML5 Web存储的localStorage和sessionStorage方式进行Web页面数据本地存储。 页面参考如下图,能将页面上的数据进行本地存储。并能读取存储的数据显示在页面上。 localStorage(本地存储),可以长期存储数据,没有时间限制,一天,一年,两年甚至更长,数据都可以使用。 sessionStorage(会话存储),只有在浏览器被关闭之前使用,创建另一个页面时同意可以使用,关闭浏览器之后数据就会消失。 某个博主的测试localStorage兼容情况,如下: 复制代码 代码如下:<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <style type="text/css"> textarea { width: 300px; height: 300px; } .button { width: 100px; } </style> </head> <body> <script type="text/javascript"> //使用HTML5 Web存储的localStorage和sessionStorage方式进行Web页面数据本地存储。 //页面参考如下图,能将页面上的数据进行本地存储。并能读取存储的数据显示在页面上。 function saveSession() { var t1 = document.getElementById("t1"); var t2 = document.getElementById("t2"); var mydata = t2.value; var oStorage = window.sessionStorage; oStorage.mydata = mydata; t1.value += "sessionStorage保存mydata:" + mydata + "\n"; } function readSession() { var t1 = document.getElementById("t1"); var oStorage = window.sessionStorage; var mydata = "不存在"; if (oStorage.mydata) { mydata = oStorage.mydata; } t1.value += "sessionStorage读取mydata:" + mydata + "\n"; } function cleanSession() { var t1 = document.getElementById("t1"); var oStorage = window.sessionStorage; var mydata = "不存在"; if (oStorage.mydata) { mydata = oStorage.mydata; } oStorage.removeItem("mydata"); t1.value += "sessionStorage清除mydata:" + mydata + "\n"; } function saveStorage() { var t1 = document.getElementById("t1"); var t2 = document.getElementById("t2"); var mydata = t2.value; var oStorage = window.localStorage; oStorage.mydata = mydata; t1.value += "localStorage保存mydata:" + mydata + "\n"; } function readStorage() { var t1 = document.getElementById("t1"); var oStorage = window.localStorage; var mydata = "不存在"; if (oStorage.mydata) { mydata = oStorage.mydata; } t1.value += "localStorage读取mydata:" + mydata + "\n"; } function cleanStorage() { var t1 = document.getElementById("t1"); var oStorage = window.localStorage; var mydata = "不存在"; if (oStorage.mydata) { mydata = oStorage.mydata; } oStorage.removeItem("mydata"); t1.value += "localStorage清除mydata:" + mydata + "\n"; } </script> <div> <textarea id="t1"></textarea> <label>需要保存的数据: </label> <input type="text" id="t2" /> <input type="button" class="button" onclick="saveSession()" name="b1" value="session保存" /> <input type="button" class="button" onclick="readSession()" value="session读取" /> <input type="button" class="button" onclick="cleanSession()" value="session清除" /> <input type="button" class="button" onclick="saveStorage()" value="local保存" /> <input type="button" class="button" onclick="readStorage()" value="local读取" /> <input type="button" class="button" onclick="cleanStorage()" value="local清除" /> </div> </body> </html> |
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