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POform validation in php/ajax
 

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    <p>i was trying to add an exception like if user input nothing or input wrong 'Contact ID' and press enter, an error message will come out &amp; notifying user that ID not found. any help? thanks in advance:) here is my index.html file.</p> <pre><code>&lt;html&gt; &lt;body&gt; &lt;script language="javascript" type="text/javascript"&gt; function ajaxFunction(e){ var e=e || window.event; var keycode=e.which || e.keyCode; if(keycode==13 || (e.target||e.srcElement).value==''){ var http; // The variable that makes Ajax possible! try{ // Opera 8.0+, Firefox, Safari http = new XMLHttpRequest(); } catch (e){ // Internet Explorer Browsers try{ http = new ActiveXObject("Msxml2.XMLHTTP"); } catch (e) { try{ http = new ActiveXObject("Microsoft.XMLHTTP"); } catch (e){ // Something went wrong alert("Your browser broke!"); return false; } } } var url = "getagentids.php?param="; var idValue = document.getElementById("agid").value; var myRandom = parseInt(Math.random()*99999999); // cache buster http.open("GET", "getagentids.php?param=" + escape(idValue) + "&amp;rand=" + myRandom, true); http.onreadystatechange = handleHttpResponse; http.send(null); function handleHttpResponse() { if (http.readyState == 4) { results = http.responseText.split(","); document.getElementById('agfn').value = results[0]; document.getElementById('agsal').value = results[1]; document.getElementById('agtel').value = results[2]; document.getElementById('agid').value = results[3]; } } } } &lt;/script&gt; &lt;form&gt; &lt;table&gt; &lt;tr&gt; &lt;td&gt;Contact ID:&lt;/td&gt; &lt;td&gt;&lt;input id="agid" type="text" name="contactid" onkeyup="ajaxFunction(event)"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Tel Number:&lt;/td&gt; &lt;td&gt;&lt;input id="agtel" type="text" name="contacttel"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Name:&lt;/td&gt; &lt;td&gt;&lt;input id="agfn" type="text" name="contactfullname"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;Salutation:&lt;/td&gt; &lt;td&gt;&lt;input id="agsal" type="text" name="contactsalutation"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td&gt;&lt;input type="reset" value="Clear"&gt;&lt;/td&gt; &lt;td&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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    1. USatiquratik
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      1. VTUpMod
    1. COso what is your problem , is your code not working ??
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      1. USKanishka Panamaldeniya
    2. CO@Kanishka tq for reply. i've tried to add exception using JS but it didn't work for me. that pop-up came out although the 'contact id' is in database. so i remove that code from index. any idea to validate the id?
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      1. USatiquratik
    3. COI believe, `e.target||e.srcElement` will give you a TRUE/FALSE value. But you are trying to access the value property of it in code.
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      1. USAkhilesh B Chandran
 

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