How To Output The Price When Clicking The Radio Button?

Does anyone know how to output the price when clicking the radio button ? Let say if i choose Small then it will display the output Rm2...for example Price = Rm 2....i have no ide

Solution 1:

You can pass as parameter this in calculate function(this refers to the element).

Using jquery:

function calculate(obj) {
  $("output").text(obj.value);
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<fieldset style="width:240 px">
  <legend>Food order</legend>
  <fieldset style="width:240 px">
    <legend>Nasi Lemak</legend>

    <p>
      <input type="radio" name="j" value="2" onclick="calculate(this);" />
      <label for='small' class="inlinelabel">
        Small</label>
      (RM2)
    </p>

    <p>
      <input type="radio" name="j" value="3" onclick="calculate(this);" />
      <label for='regular' class="inlinelabel">
        Regular</label>
      (RM3)
    </p>

    <p>
      <input type="radio" name="j" value="4" onclick="calculate(this);" />
      <label for='large' class="inlinelabel">
        Large</label>
      (RM4)
    </p>



    <tr>
      <td>Price =</td>
      <td>
        <output type="number" name="price" id="output"></output>
      </td>
    </tr>


  </fieldset>

Using plain js:

function calculate(obj) {
  document.getElementById("output").innerHTML = obj.value;
}

<fieldset style="width:240 px">
  <legend>Food order</legend>
  <fieldset style="width:240 px">
    <legend>Nasi Lemak</legend>

    <p>
      <input type="radio" name="j" value="2" onclick="calculate(this);" />
      <label for='small' class="inlinelabel">
        Small</label>
      (RM2)
    </p>

    <p>
      <input type="radio" name="j" value="3" onclick="calculate(this);" />
      <label for='regular' class="inlinelabel">
        Regular</label>
      (RM3)
    </p>

    <p>
      <input type="radio" name="j" value="4" onclick="calculate(this);" />
      <label for='large' class="inlinelabel">
        Large</label>
      (RM4)
    </p>



    <tr>
      <td>Price =</td>
      <td>
        <output type="number" name="price" id="output"></output>
      </td>
    </tr>


  </fieldset>

Solution 2:

Try it

document.getElementsByName("j").addEventListener("change", function(){
      document.getElementById("price").innerHTML = this.value;// Show the value in output element

      //or

    var myRadioValue= this.value; //for some calculate
});