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<!DOCTYPE html> <html> <body> <h1>JavaScript 数组方法</h1> <h2>concat()</h2> <p>concat() 方法用于合并（连接）数组：</p> <p id="demo"></p> <script> var arr1 = ["Emma", "Isabella"]; var arr2 = ["Jacob", "Michael", "Ethan"]; var arr3 = ["Joshua", "Daniel"]; var myChildren = arr1.concat(arr2, arr3); document.getElementById("demo").innerHTML = myChildren; </script> </body> </html>