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POGetting undefined in innerHTML when fetching and displaying data from database using AJAX and JSON
 

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  1. POGetting undefined in innerHTML when fetching and displaying data from database using AJAX and JSON
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    <p>This is the script I have written for fetching data from the database using AJAX.</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;script type="text/javascript"&gt; function loadJSON() { var data_file = "http://www.idesigns.com.pk/comingsoon/test/connect.php"; var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 &amp;&amp; xmlhttp.status==200) { var jsonObj = xmlhttp.responseText; document.getElementById("firstname").innerHTML = jsonObj.firstname; document.getElementById("lastname").innerHTML = jsonObj.lastname; document.getElementById("ajaxDiv").innerHTML=jsonObj; } } xmlhttp.open("GET", data_file, true); xmlhttp.send(); } &lt;/script&gt; &lt;title&gt;JSON&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;h1&gt;User Details&lt;/h1&gt; &lt;p id="firstname"&gt;John&lt;/p&gt; &lt;p id="lastname"&gt;Doe&lt;/p&gt; &lt;div id='ajaxDiv'&gt;Your result will display here&lt;/div&gt; &lt;button type="button" onclick="loadJSON()"&gt;Update Details &lt;/button&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>No error in database connection.<br /> no error in fetching and/or in echo of JSON object.<br /> But when I try to display the data using innerHTML, I am getting the following output with undefined instead of getting firstname and lastname from the object.</p> <p><strong>OUTPUT:</strong></p> <pre><code>undefined undefined {"id":"1","firstname":"Bruce","lastname":"Lee"} </code></pre> <p>I can't figure out what's happening. So if anyone can help? Please</p>
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    1. USsemirturgay
    1. USMuhammad Aftab
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    1. This table or related slice is empty.
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      1. POGetting undefined in innerHTML when fetching and displaying data from database using AJAX and JSON
      1. This table or related slice is empty.
      1. VTApproveEditSuggestion
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    1. COWhat do you get when you print the `jsonObj`?
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      1. POGetting undefined in innerHTML when fetching and displaying data from database using AJAX and JSON
      1. USAkshat Singhal
    2. COThis is what I am getting {"id":"1","firstname":"Bruce","lastname":"Lee"}
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      1. USMuhammad Aftab
    3. CO@AkshatSinghal: It was actually there, you had to look pretty closely to see it. :-) Semir's edit helped.
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      1. UST.J. Crowder
 

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