如何从具有动态 ID 的动态文本框获取值

Question

So i have a text box with id :

 <input type="text" name="jview_no[]" id="view'+$sr +'" value="1">

where :

$sr = ($(".my_tr_class").length + 1);

i wanted to put the value of that view+$sr to another textbox, so this is how i do it so far :

<input type="text" name="amount[]" value="'+ $("#view"+$sr).val() + '" > 

but the result is undefined.

the thing is, i don't really know how to do it the right way, would you guys please help me ?

thanks in advance

Answer 1

I don't understand what you exactly want to achieve. If you have only two inputs you can use example below (this is only for your example), but if you have more inputs and you need to match these inputs together, you have read about this in javascript.

 $(document).on('keyup','input[name="jticket_no[]"]', function(){ $(this).parent().next().children()[0].value = $(this).val() })

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <table style="width: 100%" class="table"> <thead><tr><th>No.</th> <th>Views +5</th> <th>Payment</th> </tr> </thead> <tbody id="table-details"><tr id="row1" class="jdr1"> <td><span class="btn btn-sm btn-default">1</span><input type="hidden" value="6437" name="count[]"></td> <td><input type="text" required="" class="form-control input-sm" placeholder="Views" name="jticket_no[]"></td> <td><input type="text" required="" data-parsley-type="digits" class="form-control input-sm" placeholder="Payment" name="jamount[]"></td> </tr> <tr id="row1" class="jdr1"> <td><span class="btn btn-sm btn-default">2</span><input type="hidden" value="6437" name="count[]"></td> <td><input type="text" required="" class="form-control input-sm" placeholder="Views" name="jticket_no[]"></td> <td><input type="text" required="" data-parsley-type="digits" class="form-control input-sm" placeholder="Payment" name="jamount[]"></td> </tr> </tbody> </table>