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<!DOCTYPE html> <html> <body> <p>在输入栏中按下键盘上的任意键，得到Unicode字符编码和按下的键的Unicode键码。</p> <p><strong>注意：</strong> which 和 keyCode 属性对不可打印的功能键（如 CAPS LOCK、CTRL、ESC、F12 等）的 onkeypress 事件不起作用。</p> <input type="text" size="50" onkeypress="uniCharCode(event)" onkeydown="uniKeyCode(event)"> <p>onkeypress - <span id="demo"></span></p> <p>onkeydown - <span id="demo2"></span></p> <script> function uniCharCode(event) { var char = event.which || event.keyCode; document.getElementById("demo").innerHTML = "Unicode 字符代码为：" + char; } function uniKeyCode(event) { var key = event.which || event.keyCode; document.getElementById("demo2").innerHTML = "Unicode KEY 代码是：" + key; } </script> </body> </html>