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<!DOCTYPE html> <html> <body> <h2>JavaScript 函数</h2> <p>这个例子展示了一个函数的语法，没有使用箭头函数语法。</p> <p id="demo"></p> <script> var hello; hello = function() { return "Hello World!"; } document.getElementById("demo").innerHTML = hello(); </script> </body> </html>