通过ajax将数组发送到javascript

Question

I am trying to send an array from PHP to Ajax in javascript. 我正在尝试将JavaScript中的数组从PHP发送到Ajax。 my array in PHP file "myphp.php" is $parts and is multidimentional. 我在PHP文件“ myphp.php”中的数组是$ parts并且是多维的。

I have used both echo $parts and echo json_encode($parts) none works for me. 我已经用过echo $ parts和echo json_encode（$ parts）对我都不起作用。 $parts has 2 rows and 2 columns this is the result of var_dump: $ parts有2行2列，这是var_dump的结果：

array(4) { [0]=> array(3) { [0]=> string(13) "1350655763.12" [1]=> string(2) "25" [2]=> string(1) " " } [1]=> array(3) { [0]=> string(13) "1350655763.12" [1]=> string(2) "26" [2]=> string(0) "" } [2]=> array(1) { [0]=> string(0) "" } [3]=> array(1) { [0]=> string(0) "" } }

I want to send the hole array to Ajax but just display $parts[0][0] on the web page. 我想将孔阵列发送给Ajax，但只在网页上显示$ parts [0] [0]。 When I use 当我使用

echo $parts

in myphp.php file: "Array" name is displayed on the web page When I use 在myphp.php文件中：当我使用时，“ Array”名称显示在网页上

echo json_encode($parts)

in myphp.php file: all components of the array are displayed instead of the first one 在myphp.php文件中：显示数组的所有组件，而不是第一个组件

        <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <script>
function getXMLHttp()
{
  var xmlHttp

  try
  {
    //Firefox, Opera 8.0+, Safari
    xmlHttp = new XMLHttpRequest();
  }
  catch(e)
  {
    //Internet Explorer
    try
    {
      xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
    }
    catch(e)
    {
      try
      {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
      }
      catch(e)
      {
        alert("Your browser does not support AJAX!")
        return false;
      }
    }
  }
  return xmlHttp;
}

function MakeRequest()
{
  var xmlHttp = getXMLHttp();

  xmlHttp.onreadystatechange = function()
  {
    if(xmlHttp.readyState == 4) 
     { 
      var parts=JSON.parse(xmlHttp.responseText); 
      document.getElementById('ResponseDiv').innerHTML = parts[0][0]; 
     }
  }

  xmlHttp.open("GET", "myphp.php", true); 
  xmlHttp.send(null);
}


result=MakeRequest();



</script>


  </head>
  <body>

    <div id='ResponseDiv'>
      This is a div to hold the response.
    </div>
  </body>
</html>

How should I change these codes to just get parst[0][0] on the webpage? 我应该如何更改这些代码以仅在网页上获取parst [0] [0]？ Thanks in advance for you help 预先感谢您的帮助

Answer 1

you need to use JSON.parse on at javascript and json_encode at php. 您需要在javascript上使用JSON.parse和在php上使用json_encode 。

PHP: PHP：

$parts = array();
....
echo (json_encode($parts));

Javascript: 使用Javascript：

var parts = JSON.parse(xmlHttp.responseText);

Optionally, on your PHP page, you can also define header('Content-type: application/json'); （可选）在PHP页面上，您还可以定义header('Content-type: application/json');

Answer 2

You should parse your json encoded data into javascript before use it. 使用前，您应将json编码的数据解析为javascript。 Please check json here 请在这里检查json

http://www.json.org/js.html http://www.json.org/js.html

Please try this code: 请尝试以下代码：

result = MakeRequest();
var myObject = eval('(' + result + ')');
alert(myObject[0][0]);

通过ajax将数组发送到javascript

问题描述

2 个解决方案

解决方案1
1 已采纳 2012-10-23 18:43:48

解决方案2
0 2012-10-23 18:44:11

通过ajax将数组发送到javascript

问题描述

2 个解决方案

解决方案1 1 已采纳 2012-10-23 18:43:48

解决方案2 0 2012-10-23 18:44:11

解决方案1
1 已采纳 2012-10-23 18:43:48

解决方案2
0 2012-10-23 18:44:11