Need a jQuery function that updates the 'id' after clicking on a specific div? Here's how to do it!

I need help simplifying my current situation.

Step 1: I want to increment the variable "count" by 1 every time a specific div is clicked.

Step 2: After updating "count", I want to utilize it in another function. This function involves copying the value from a select element with an id that includes the updated "count" at the end, and pasting it into an input element with a matching id also including the updated "count".

Issue: The updated "count" works correctly within the function where the value is copied from select to input. However, there seems to be a problem in the initial #id selector with bind(). In this case, the "count" remains unchanged at "0", resulting in the incorrect input element being updated by the select element with "0" at the end of its id.

Could someone offer advice on how to resolve this issue with my variable?


$(document).ready(function () {

    var count = 0;
    $("#clickBtn").on("click", function (event) {
        event.preventDefault();
        var textBox = document.getElementById("text");
        textBox.value = count;
        count++;
    });

    $('#selectElmnt' + count).bind('change click keyup', function () {
        $('#inputElmnt' + count).val($(this).val());
    });
});

Answer №1

At the onset of page load, both

$("#clickBtn").on("click", function (event)
and $('#selectElmnt' + count).bind functions are executed within $(document).ready() with the current value of count being zero.

The purpose behind the second function is not entirely clear. If the intention is to bind a change/click/keyup event to all select elements bearing different IDs, this action can be executed initially. On the other hand, if you aim to perform some action based on the current count, it should be done inside the click callback.

For instance, if the objective is to duplicate the values from select1 to input1, select2 to input2 without considering the count, you can incorporate the count as a data element along with a specific class. This allows for markup like:

<select id="selectElmnt1" class="selectElmnt" data-count="1">...</select>
<select id="selectElmnt2" class="selectElmnt" data-count="2">...</select>
<select id="selectElmnt3" class="selectElmnt" data-count="3">...</select>

The ensuing JavaScript would then be:

$(document).ready(function () {
    var count= 0;
    $("#clickBtn").on("click", function (event) {
        event.preventDefault();
        var textBox = document.getElementById("text");
        textBox.value = count;
        count++;
    });  

    $('.selectElmnt').on('change click keyup', function () {
        var count_id = $(this).data('count');
        $('#inputElmnt' + count_id).val($(this).val());
    });
});

However, if the task is contingent upon the button trigger, an approach similar to this might be necessary:

$(document).ready(function () {
    var count= 0;
    $("#clickBtn").on("click", function (event) {
        event.preventDefault();
        var textBox = document.getElementById("text");
        textBox.value = count;
        count++;
        // Implement desired actions here, potentially copying the value at this moment
        $('#inputElmnt' + count_id).val( $('.selectElmnt' + count).val() );
    });         
});

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