Passing Variable between JavaScript click handlers

Question

How to pass variable in javaScript click handlers.

I have assigned var condition_selction = ($(this).val()); in .change(function). How I can get the value of this variable in the second click handle which is $( "#process-signs-scrap-scrapped-button-enabled" ).click(function() {.

How I pass variable between these two functions.

$('input:checkbox').change(function() {
        /*get the parent node of the radio and then hide only its siblings*/
        $(this).parent('label').siblings().toggle();
        if ($('.sign-condition').is(':checked')) {
            var condition_selction = ($(this).val());
        }
        if ($('.sign-reason').is(':checked')) {
            var reason_selction = ($(this).val());
        }
        //Check that both select fields have a value
        if (condition_selction != null && reason_selction != null) {
            $("#process-signs-scrap-scrapped-button-disabled").hide();
            $("#process-signs-scrap-scrapped-button-enabled").show();
        } else {
            $("#process-signs-scrap-scrapped-button-disabled").show();
            $("#process-signs-scrap-scrapped-button-enabled").hide();
        }
    });

    $( "#process-signs-scrap-scrapped-button-enabled" ).click(function() {



            var process_signs_scrap_condition = condition_selction;


            var process_signs_scrap_reason = reason_selction


            // Open the timer modal
            $('#process-signs-scrap-scrapped-modal').modal('show');

What about global variable or scope of variable same for both of two function? — Yogen Darji
– Yogen Darji, Commented Sep 12, 2017 at 12:42

Jigar Shah · Accepted Answer · 2017-09-12 12:43:39Z

Declare both var globally, so you can access them in both functions

var condition_selction; // like this
var reason_selction;

$('input:checkbox').change(function() {
    /*get the parent node of the radio and then hide only its siblings*/
    $(this).parent('label').siblings().toggle();
    if ($('.sign-condition').is(':checked')) {
        condition_selction = ($(this).val()); // removed declaration 
    }
    if ($('.sign-reason').is(':checked')) {
        reason_selction = ($(this).val());
    }
    //Check that both select fields have a value
    if (condition_selction != null && reason_selction != null) {
        $("#process-signs-scrap-scrapped-button-disabled").hide();
        $("#process-signs-scrap-scrapped-button-enabled").show();
    } else {
        $("#process-signs-scrap-scrapped-button-disabled").show();
        $("#process-signs-scrap-scrapped-button-enabled").hide();
    }
});

$( "#process-signs-scrap-scrapped-button-enabled" ).click(function() {



        var process_signs_scrap_condition = condition_selction;


        var process_signs_scrap_reason = reason_selction


        // Open the timer modal
        $('#process-signs-scrap-scrapped-modal').modal('show');

gavgrif · Accepted Answer · 2017-09-12 12:55:44Z

You can pass the value to a data attribute on the button and then on the onclick of the button access the data attribute and its good to go. I have modified some of your code to get a sample version going.

$('input:checkbox').change(function() {
        if ($('.sign-condition').is(':checked')) {
            var condition_selction = $(this).val();
            $("#process-signs-scrap-scrapped-button-enabled").attr('data-value', condition_selction );
        }
   })

    $( "#process-signs-scrap-scrapped-button-enabled" ).click(function() {
            var  condition_selction = $(this).attr('data-value');
           console.log("The value of the checkbox is "  + condition_selction);
            })

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<label>
  <input type="checkbox" class="sign-condition" value="sign condition" /> click me first
</label>
<hr/>
<button type="button" data-value="" id="process-signs-scrap-scrapped-button-enabled">click me last</button>

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