<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> </head> <body> 字符串连接<br> <p ></p> <script> var text1 = "Hello"; var text2 = "World!"; var text3 = text1.concat(" ",text2); document.getElementById("demo").innerHTML = text3; </script> </body> </html>
学习网址：https://www.w3school.com.cn/js/js_string_methods.asp