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<!DOCTYPE html> <html> <body> <h1>存储 setItem() 方法</h1> <p>此示例演示如何使用 setItem() 方法设置指定本地存储项的值。</p> <button onclick="createItem()">设置本地存储项</button> <h2>获取值</h2> <p>点击按钮获取项目值：</p> <button onclick="readValue()">获取项目值</button> <p id="demo"></p> <script> function createItem() { localStorage.setItem("mytime", Date.now()); } function readValue() { var x = localStorage.getItem("mytime"); document.getElementById("demo").innerHTML = x; } </script> </body> </html>