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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <meta name="viewport" content="width=device-width, initial-scale=1.0">
- <title>Document</title>
- </head>
- <body>
- <script>
- //
- function fun(a){
- var res = 4*a*a+3*a+2;
- // console.log(res);
- return res;
- }
- // 调用函数 函数名+() 函数就可以执行
- var num = fun(1);
- console.log(num);
- </script>
- </body>
- </html>
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