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<!DOCTYPE html> <html> <body> <h1>使用 JavaScript 更改用户选择</h1> <p>点击“试一试”按钮，将 p 元素的用户选择属性设置为 "none"：</p> <button onclick="myFunction()">试一试</button> <p id="demo">你点击按钮后，无法选中这个p元素的文本（前后双击我试一试）。</p> <script> function myFunction() { var x = document.getElementById("demo"); x.style.WebkitUserSelect = "none"; // Safari x.style.msUserSelect = "none"; // IE 10 and IE11 x.style.userSelect = "none"; // 标准语法 } </script> </body> </html>