<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>函数调用</title> <script type="text/javascript"> function contxt() //定义函数 { alert("哈哈，调用函数了!"); } </script></head><body> <form> <input type="button" value="点击我" onclick=" contxt() " /> </form></body></html>
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