javascript基础--arguments可变参
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>求和</title> <script> function sum() { var result = 0; var i = 0; for (i = 0; i < arguments.length; i++) { //arguments表示函数内部数量 存放数组 result += arguments[i]; } alert(result); } sum(1, 2, 4, 23, 22); </script> </head> <body> </body> </html>