Updating with Ajax is functional for radios and checkboxes, however it does not work for buttons

When a button is clicked, I want the form to process and update accordingly.

HTML:

<input type="button" value="5.00" name="updatefield" id="updatefield" class="chooseit">

I have also tried:

<button name="updatefield" id="updatefield" class="chooseit">5.00</button>

<button name="updatefield" id="updatefield" class="chooseit" type="button">5.00</button>

<button name="updatefield" id="updatefield" class="chooseit" type="button" value="5.00">5.00</button>

<button name="updatefield" id="updatefield" class="chooseit" type="submit" value="5.00">5.00</button>

Changing button to something other than "button" (radio, checkbox, etc) causes the form to work as expected. (The amount 5.00 is added to the overall page total)

View.js:

    events: {
         'click button.chooseit': 'chooseIt',
    },

Processing.js:

    chooseDonate: function(updatefield) {
    this.set('updatefield', updatefield);
    var that = this;
    $.post('index.php?route=info/updateinfo', this.toJSON(), function(data) {
        qc.event.trigger('updateAll', data);
        that.updateForm(data);
    }, 'json').error();
},

Is there a difference in how buttons are handled? Can't understand why radios/checkboxes work but buttons do not.

Answer №1

It appears that the framework being used is unfamiliar to me. Based on the code snippet

events:{'click button.chooseit': 'chooseIt',}
, it seems that a click event is bound to a function named chooseIt. It would be helpful to also see the implementation of this function.

In response to the question "Are buttons handled differently?" - the handling depends on the type of button being used. Different types include <input type="button">, <input type="submit">, <input type="image">, <input type="reset">, <button type="button">, <button type="submit">, <button type="menu">, and <button type="reset">. For instance, if the type is "submit" or "image", the form gets submitted. If it's "reset", the form controls revert to their initial values. The behavior varies based on the button type, with specific actions triggered accordingly.

To address the issue at hand, in pure JavaScript, there should not be any distinction. Below is an example where various input elements such as <input type="radio">, <input type="checkbox">, <input type="button">, <button type="button">, and <select> all utilize the same function to update the value displayed by <output>. Each element interacts similarly with the function, ensuring consistent behavior across different types of inputs.

If troubleshooting is needed, delve into the workings of the framework to identify any potential issues. One common pitfall is inadvertent form submission, which can appear instantaneous. Enabling features like "sticky log" in the developer console can help monitor activities even after page reloads, facilitating error detection.

var output = document.getElementById('output');
function setOutput(event) {
  var value = this.value;
  if (this.type === 'checkbox') {
    if (!this.checked) value = '';
  }
  output.value = value;
}
document.querySelectorAll('input, button').forEach(
  function (elem) {
    elem.addEventListener('click', setOutput);
  }
);
document.querySelectorAll('select').forEach(
  function (elem) {
    elem.addEventListener('change', setOutput);
  }
);
fieldset{
  display:inline-block;
  width:150px;
  height:50px;
  vertical-align:top;
  margin:0;
  padding:0;
}
fieldset p {
  margin:0;
  padding:0;
  font-size:80%;
}
<p>Proof of concept that the type of input element doesn't matter in this case.</p>
<form id="form1">
  <fieldset>
    <p>&lt;input type="radio"&gt;</p>
    <label><input value="5" type="radio" name="radioValue">5</label>
    <label><input value="10" type="radio" name="radioValue">10</label>
    <label><input value="20" type="radio" name="radioValue">20</label>
  </fieldset>
  <fieldset>
    <p>&lt;input type="checkbox"&gt;</p>
    <label><input value="5" type="checkbox" name="chkValue">5</label>
    <label><input value="10" type="checkbox" name="chkValue">10</label>
    <label><input value="20" type="checkbox" name="chkValue">20</label>
  </fieldset>
  <fieldset>
    <p>&lt;input type="button"&gt;</p>
    <input value="5" type="button" name="ibtnValue">
    <input value="10" type="button" name="ibtnValue">
    <input value="20" type="button" name="ibtnValue">
  </fieldset>
  <fieldset>
    <p>&lt;button type="button"&gt;</p>
    <button value="5" type="button" name="btnValue">5</button>
    <button value="10" type="button" name="btnValue">10</button>
    <button value="20" type="button" name="btnValue">20</button>
  </fieldset>
  <fieldset>
    <p>&lt;select&gt;</p>
    <select>
      <option value="">--Select value---</option>
      <option value="5">5</option>
      <option value="10">10</option>
      <option value="20">20</option>
    </select>
  </fieldset>
  <fieldset>
    <p>Last selected value: <output id="output"></output></p>
  </fieldset>
</form>

Answer №2

When your button is located within a form, it may be automatically submitting the form (as this is its default functionality).

To prevent this from happening, consider including a type attribute to inform the browser that you do not want the form to submit:

<button name="updatefield" id="updatefield" class="chooseit" type="button">5.00</button>

Answer №3

To ensure the button functions correctly, remember to include a specific value like this:

<button name="submitform" id="submitform" class="selectit" type="submit" value="10.00">10.00</button>

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