value from each same input id / name

Quote:

HTML

<input id="ChildidIntl1" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl1" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl1" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl1" class="onlyforage" type="text" name="ageperwise[1]"></input>

First of all, all the TextBox Id are same, which can't be possible. Id is a attribute which should be different from all other elements on the page.

So, if you change the code to...

<input id="ChildidIntl1" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl2" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl3" class="onlyforage" type="text" name="ageperwise[1]"></input>

<input id="ChildidIntl4" class="onlyforage" type="text" name="ageperwise[1]"></input>

Then getting the value is easy in jQuery.

Value by Selecting IDs

It is like $('#ChildidIntl1').val();.

Demo - [Demo] Value from TextBoxes on Button Click[^]

Value by Selecting name

If you want to use "name" attribute to get the value, then you have to select each of the TextBox with the help of Attribute Equals Selector [name="value"][^].

So, code would look like...

var allValues = "";

$('input[name="ageperwise[1]"]').each(function(){
    allValues += $(this).val() + "\n";
});

Demo - [Demo] Value from TextBoxes (having same name) on Button Click[^]

Value by Selecting class

As per Karthik's comment, I am also giving the Demo of selecting the value by class name.

Demo - [Demo] Value from TextBoxes (having same class) on Button Click[^]