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<!DOCTYPE html> <html> <body> <p>单击该按钮可反转数组中元素的顺序。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> var fruits = ["香蕉","橙子","苹果","芒果"]; document.getElementById("demo").innerHTML = fruits; function myFunction() { fruits.reverse(); document.getElementById("demo").innerHTML = fruits; } </script> </body> </html>