jquery ajax post方法获取json数据

前端

html>


    http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    
    


 
  
 
    
  type= 
  "text"  
  id= 
  "price" 
  > 
    
  type= 
  "button"  
  id= 
  "btn"  
  value= 
  "submit" 
  > 
   
  
heigh: 
   
  id= 
  "heigh" 
  >  
  
midle: 
   
  id= 
  "midle" 
  >  
  
low: 
   
  id= 
  "low" 
  >  
   
   
  
 
  
php
 
  
 
  
 
  
 
  
$k 
  = 
  $_POST 
  [ 
  "symbol" 
  ] 
  ; 
  

switch 
  ( 
  $k 
  ){ 
   
 
  case  
  'msft' 
  : 
   
 
  $v 
  = 
  array 
  ( 
  "h" 
  => 
  "100"  
  ,  
  "m" 
  => 
  "80"  
  ,  
  "l" 
  => 
  "50" 
  ) 
  ; 
    
  
break 
  ; 
   

 
  case  
  'goog' 
  : 
   
 
  $v 
  = 
  array 
  ( 
  "h" 
  => 
  "200"  
  ,  
  "m" 
  => 
  "180"  
  ,  
  "l" 
  => 
  "150" 
  ) 
  ; 
    
  
break 
  ; 
   

 
  case  
  'aapi' 
  : 
   
 
  $v 
  = 
  array 
  ( 
  "h" 
  => 
  "300"  
  ,  
  "m" 
  => 
  "280"  
  ,  
  "l" 
  => 
  "250" 
  ) 
  ; 
   
 
  break 
  ;
 
  } 
   
  
$json 
  =json_encode( 
  $v 
  ) 
  ; 
  
header( 
  "content-type:application/json" 
  ) 
  ; 
  
echo  
  $json 
  ;

?>