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<!DOCTYPE html> <html> <body> <p>单击按钮加入三个数组。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var hege = ["Cecilie", "Lone"]; var stale = ["Emil", "Tobias", "Linus"]; var kai = ["Robin"]; var children = hege.concat(stale,kai); document.getElementById("demo").innerHTML = children; } </script> </body> </html>