Validation of forms using ajax and javascript

I have implemented ajax on my webpage to dynamically change the content of a main div when different fields in the navigation bar are clicked. However, I am encountering a problem with form validation using JavaScript on elements loaded via ajax. For instance, when I load a checkbox and a submit button through ajax and then try to check the checkbox and submit the form, the validation does not work as expected.

Interestingly, when I perform the same form validation (checkbox+submit) without ajax, it works perfectly fine.

Am I missing something logical in this scenario?

Thank you!

Edit: Apologies for not providing the code. Here is my ajax code:

function loadWholePage(url)
{
    var y = document.getElementById("storage");
    //var x = document.getElementById("displayed");
    var x = document.getElementById("content");
    loadHTML(url, processHTML, x, y);
}   

function loadHTML(url, fun, storage, param)
    {
var xhr = createXHR();
xhr.onreadystatechange=function()
{ 
    if(xhr.readyState == 4) //  The request is complete
    {
        //if(xhr.status == 200)
        {
            storage.innerHTML = getBody(xhr.responseText);

            fun( storage, param );
        }
    } 
}; 


xhr.open("GET", url, true);
xhr.send(null); 
    } 

function getBody(content) 
{
 test = content.toLowerCase();    // to eliminate case sensitivity
 var x = test.indexOf("<body");
 if(x == -1) return "";

 x = test.indexOf(">", x);
 if(x == -1) return "";

 var y = test.lastIndexOf("</body>");
 if(y == -1) y = test.lastIndexOf("</html>");
 if(y == -1) y = content.length;    // If no HTML then just grab everything till end

 return content.slice(x + 1, y);   
} 

The HTML file I load with ajax:

<html>
<body>
<form>
<input type="checkbox" name="values" value="" id="chk3" />
<select name="select3" class="test" style="width:7em;" id="select3">
<option VALUE="">0-100</option>
<option VALUE="/tags/">100-200</option>
<option VALUE="/"> 200-300</option>
<option VALUE="/"> 300-400</option>
<option VALUE="/"> 400-500</option>
</select>
<input type="button" class="submit" id="testbutton" style="width:12em;" value="submit" onClick="testIt();">
 </form>                            
 </body>
</html>

I load it using:

<li onClick='setSelectedListElement(this);'>
<a onclick="loadWholePage('test.html');">TEST
</a>
</li>

And the simple script to check if the checkbox is checked:

<script type="text/javascript">
function testIt(){
var x=document.getElementById("chk3").checked;
alert(x);
}
</script>

Answer №1

After your webpage finishes loading, you can Right Click and select View Source to examine the dynamically generated IDs of your controls. Utilize these IDs for the checkboxes and other controls to verify if the validations are being triggered successfully.

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