1 代码示例

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  6.     <title>Document</title>
  7.     <script>
  8.         // 定义函数关键字function
  9.         function fnSum(num1, num2){
  10.             var ret = num1 + num2;
  11.             return ret;
  12.         }
  13.         var ret = fnSum(23,3)
  14.         alert(ret);
  15.     </script>
  16. </head>
  17. <body>
  19. </body>
  20. </html>

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