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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>runoops基础编程教程(runoops.com)</title> </head> <body> <p> + 号运算符用于连接字符串。</p> <button onclick="myFunction()">点我</button> <p id="demo"></p> <script> function myFunction() { var text1 = "Good "; var text2 = "Morning"; var text3 = text1 + text2; document.getElementById("demo").innerHTML = text3; } </script> </body> </html>
运行结果: