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Tryit: JAVASCRIPT
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<!DOCTYPE html> <html> <body> <p>单击按钮以显示按钮元素的 onclick 属性的值。</p> <button id="myBtn" onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myBtn").getAttribute("onclick"); document.getElementById("demo").innerHTML = x; } </script> </body> </html>