<!DOCTYPE html>charset="utf-8"W3Cschool教程(w3cschool.cn)id="demo"点击按钮合并数组。onclick="myFunction()"点我function myFunction(){var hege = ["Cecilie", "Lone"];var stale = ["Emil", "Tobias", "Linus"];var children = hege.concat(stale);var x=document.getElementById("demo");x.innerHTML=children;}