CODEWITHSUNDEEP
jquery
user1591668
user1591668

Reputation: 2883

jquery how to properly increment a value

I have a button which has a value each time a user clicks that button the value suppose to go up by 1. This works but not how I would like for instance for there are no clicks then the buttons value is 0 if a user clicks then the value goes to 01 instead of 1. How can I go about resolving this? I been stuck admittingly I am new to Jquery.

                var cfollowers = $('#cfollowers').val()+1;
                $('#cfollowers').val(cfollowers);


                   <input type="button" id="cfollowers"  value="0" />

Upvotes: 0

Views: 79

Answers (1)

Casey Rule
Casey Rule

Reputation: 2085

Your issue is that the value of an input element is reprented as a string, so you are concatenating strings rather than adding integers. Just add a parseInt call to your code to fix the issue:

<input type="button" id="cfollowers"  value="0" />
<script>
    $('#cfollowers').click( function() {
        var cfollowers = parseInt($('#cfollowers').val())+1;
        $('#cfollowers').val(cfollowers);
    });
</script>

Edit: docodemore makes a good point! A better way to approach this would be to store the value of the button as a separate variable.

<input type="button" id="cfollowers"  value="0" />
<script>
    var cfollowers = 0;
    $('#cfollowers').click( function() {
        cfollowers++;
        $('#cfollowers').val(cfollowers);
    });
</script>

Upvotes: 3

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