dongyan2469
2017-02-04 18:52
浏览 46

何时使用ajax jquery从php文件中获取数据,是否需要在php文件中回显才能返回数据?

when to use ajax jquery to get data from php file, Does it need to echo in php file to return data? because I want to know if it has a case that not have to echo.

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Document</title>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
  <script>
    $(function(){
      $("#btn1").click(function(){
        $.post("test2.php", 
        {
          data1: $("#txt1").val(),
          data2: $("#txt2").val()
        },
            function(resut){
              $("#div1").html(resut);
            }
          );
      });
    });
  </script>
</head>
<body>
<input type="text" id="txt1">
<input type="text" id="txt2">
<div id="div1"></div>
<input type="button" id="btn1" value="Load">

</body>
</html>

php file test2.php

<?php

echo "You input : <u>".$_POST["data1"]."</u> and <u>".$_POST["data2"]."</u>";
?>

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何时使用ajax jquery从php文件中获取数据,是否需要回显 在php文件中返回数据? 因为我想知道它是否有一个不必回应的情况。

 &lt;!DOCTYPE html&gt; 
&lt; html lang =“en”&gt; 
&lt;  head&gt; 
&lt; meta charset =“UTF-8”&gt; 
&lt; title&gt;文档&lt; / title&gt; 
&lt; script src =“https://ajax.googleapis.com/ajax/libs/jquery  /3.1.1/jquery.min.js"></script>
&lt; script&gt; 
 $(function(){
 $(“#btn1”)。click(function(){
  $ .post(“test2.php”,
 {
 data1:$(“#txt1”)。val(),
 data2:$(“#txt2”)。val()
},
  function(resut){
 $(“#div1”)。html(resut); 
} 
); 
}); 
}); 
&lt; / script&gt; 
&lt; / head&gt;  
&lt; body&gt; 
&lt; input type =“text”id =“txt1”&gt; 
&lt; input type =“text”id =“txt2”&gt; 
&lt; div id =“div1”&gt;&lt;  / div&gt; 
&lt; input type =“button”id =“btn1”value =“Load”&gt; 
 
&lt; / body&gt; 
&lt; / html&gt; 
   
  
 

php file test2.php

 &lt;?php 
 
echo“你输入:&lt; u&gt;”。$ _ POST [“data1”]。  “&LT; / U&GT; 和&lt; u&gt;“。$ _ POST [”data2“]。”&lt; / u&gt;“; 
?&gt; 
   
 
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2条回答 默认 最新

  • dongzhan1948 2017-02-04 19:06
    已采纳

    Yes you are supposed to echo/print the data in your server side (php). Only then the client side script can fetch the data. You could also print the data in JSON formatted strings, and do the output formatting on the client side.

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  • doulanli6146 2017-02-04 20:33

    You should use echo json_encode($array); and on server side and on client side

    <script>
       $.ajax({
           type : "GET",
           url : "job.php",
        }).done(function(msg) {
          var obj = jQuery.parseJSON(msg);
          alert(obj.name + " " + obj.last_name);
       });
    </script>
    
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