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js函数类型
kiraseo_wwwkiraercom
Original
336 people have browsed it

函数参数类型与返回值方法

  1. console.log("函数参数类型与返回值方法");
  2.       let  sum  =  function ( a  ,  b){
  3.         return   a  +  b;
  4.       };
  5.       console.log("参数类型为number类型");
  6. console.log(sum(20,50));
  7. console.log(typeof  sum(20,50));
  8. console.log("返回类型为number类型,并且为多个参数");
  9. console.log("+++++++++++++++++++++++");
  10. function  getName( ... users){
  11.     return   users;
  12. }
  13. console.log("参数类型为object类型");
  14. console.log(getName(' 张三 ' , ' 李四 '  ,  ' 王五' ));
  15. console.log(typeof  getName(' 张三 ' , ' 李四 '  ,  ' 王五' ));
  16. console.log("返回类型为object类型，并且为多个参数");

输出效果图

实例演示模板字面量与模板函数的声明,参数特点

  1. console.log("+++++++++++++++++++++++");
  2. console.log("实例演示模板字面量与模板函数的声明,参数特点 ");
  3. let  cat = " 英短 " ;
  5. let  fn  = function( cat ){
  6.         return  ' 我家猫的品种 ' + cat ;
  7. };
  8. console.log(fn(`${cat}`));
  9. cat   =' 大橘 ' ;
  10. console.log(fn(`${cat}`));

输出效果图

实例演示闭包的形成条件与访问方法,并明白纯函数的特点

  1. console.log("实例演示闭包的形成条件与访问方法,并明白纯函数的特点");
  2. let  f1  = function( a ){
  3.      return  function( b ){
  4.         return  function( c, d) {
  5.           return  a* b *c *d;
  6.          };
  7.      };
  8. };
  10. console.log(f1(8)(6)(5,4));

输出效果图

完整代码如下

  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <meta http-equiv="X-UA-Compatible" content="IE=edge">
  6.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  7.     <title>Document</title>
  8. </head>
  9. <body>
  10.     <script>
  11. console.log("函数参数类型与返回值方法");
  12.       let  sum  =  function ( a  ,  b){
  13.         return   a  +  b;
  14.       };
  15.       console.log("参数类型为number类型");
  16. console.log(sum(20,50));
  17. console.log(typeof  sum(20,50));
  18. console.log("返回类型为number类型,并且为多个参数");
  19. console.log("+++++++++++++++++++++++");
  20. function  getName( ... users){
  21.     return   users;
  22. }
  23. console.log("参数类型为object类型");
  24. console.log(getName(' 张三 ' , ' 李四 '  ,  ' 王五' ));
  25. console.log(typeof  getName(' 张三 ' , ' 李四 '  ,  ' 王五' ));
  26. console.log("返回类型为object类型，并且为多个参数");
  27. console.log("+++++++++++++++++++++++");
  28. function  getNames( username){
  29.     //return  'hello '+ ;
  30.     return   username +  '： 你好';
  31. }
  32. console.log("参数类型为string类型");
  33. console.log(getNames(" 丽丽 "));
  34. console.log(typeof getNames(" 丽丽 "));
  35. console.log("返回参数类型为string类型,并且为1个参数");
  36. console.log("+++++++++++++++++++++++");
  37. console.log("+++++++++++++++++++++++");
  38. console.log("实例演示模板字面量与模板函数的声明,参数特点 ");
  39. let  cat = " 英短 " ;
  41. let  fn  = function( cat ){
  42.         return  ' 我家猫的品种 ' + cat ;
  43. };
  44. console.log(fn(`${cat}`));
  45. cat   =' 大橘 ' ;
  46. console.log(fn(`${cat}`));
  47. console.log("+++++++++++++++++++++++");
  48. console.log("实例演示闭包的形成条件与访问方法,并明白纯函数的特点");
  49. let  f1  = function( a ){
  50.      return  function( b ){
  51.         return  function( c, d) {
  52.           return  a* b *c *d;
  53.          };
  54.      };
  55. };
  57. console.log(f1(8)(6)(5,4));
  60.     </script>
  62. </body>
  63. </html>

输出效果截图如下

Correcting teacher：PHPzPHPz

Correction status：qualified

Teacher's comments：
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