CODEWITHSUNDEEP
javascriptjqueryhtmlajax
Billy Adelphia
Billy Adelphia

Reputation: 1027

send button value to Jquery AJAX with onclick()

is it possible to send a value from button to Jquery AJAX with onclick function ? I have tried something like this code, but not working. There is nothing on console log.

html

<button type="button" class="hapus_krs" onclick="hapus_krs(this.value)" value="1">x</button> 
<button type="button" class="hapus_krs" onclick="hapus_krs(this.value)" value="2">x</button>
<button type="button" class="hapus_krs" onclick="hapus_krs(this.value)" value="n">x</button>

script

function hapus_krs() {
    var formData = {
        'id_mhs': $(this).val()
    };
    $.ajax({
            type: 'POST',
            url: '<?=base_url()?>akademik/hapus_krs',
            data: formData,
            dataType: 'json',
            encode: true
        })
        .done(function(data) {
            console.log(data);
        })
};

Upvotes: 2

Views: 9893

Answers (3)

Chris Lam
Chris Lam

Reputation: 3614

When you invoke the function with onclick="hapus_krs(this.value)", you are already passing the button value to the function as parameter:

function hapus_krs(value) {
    var formData = {
        'id_mhs': value
    };
}

Unobtrusive JS version:

<button type="button" class="hapus_krs" value="1">x</button> 
<button type="button" class="hapus_krs" value="2">x</button>
<button type="button" class="hapus_krs" value="n">x</button>

$('button.hapus_krs').click(function() {
    var formData = {
        'id_mhs': this.value // $(this).val() also works but it's unnecessary to invoke another jQuery call
    };
});

Upvotes: 2

Mμ.
Mμ.

Reputation: 8542

You have to be careful when playing with this. In your code, this might not refer the the button that has been clicked.

In addition, you are passing a this.value as a parameter and yet you are not using it. So your function should look like the following:

function hapus_krs(value) {
    var formData = {
        'id_mhs': value
    };
    $.ajax({
        type: 'POST',
        url: '<?=base_url()?>akademik/hapus_krs',
        data: formData,
        dataType: 'json',
        encode: true
    })
    .done(function(data) {
        console.log(data);
    })
};

Upvotes: 1

Shiladitya
Shiladitya

Reputation: 12181

Here you go with the solution https://jsfiddle.net/60qu6mev/

$('.hapus_krs').click(function(){
var formData = {
  'id_mhs': $(this).attr('value')
};
console.log(formData);
$.ajax({
      type: 'POST',
      url: '<?=base_url()?>akademik/hapus_krs',
      data: formData,
      dataType: 'json',
      encode: true
  })
  .done(function(data) {
      console.log(data);
  })
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<button type="button" class="hapus_krs"  value="1">x</button> 
<button type="button" class="hapus_krs" value="2">x</button>
<button type="button" class="hapus_krs" value="n">x</button>

I have removed the onclick from HTML, rather used a jQuery click event to handle ajax call & retrieve value from button

Upvotes: 2

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