php+ajax+json 详解及实例代码

<html>
<head>
<meta http-equiv="content-type" content="text/html;charset=utf-8" />
<script type="text/javascript" src="/UploadFiles/2021-04-02/jquery-1.8.2.min.js">

 php页面：


<"Content-type:text/html;charset=utf-8");
    $username = $_POST['username'];
    $age = $_POST['age'];
    $job = $_POST['job'];
    $json_arr = array("username"=>$username,"age"=>$age,"job"=>$job);
    $json_obj = json_encode($json_arr);
    echo $json_obj;
"htmlcode">

<script type="text/javascript">
 $(function(){
 $("#send").click(function(){
   var cont = {username:$("input")[0].value,age:$("input")[1].value,job:$("input")[2].value};
   var url = 'ab.php';
   $.post(url,cont,function(data){
    var res = eval("(" + data + ")");//转为Object对象
   var str = res.username + res.age + res.job;
  $("#result").html(str);
  });
 }); 
 });
</script>




感谢阅读，希望能帮助到大家，谢谢大家对本站的支持！