How I get the calculation in same page when I select drop down value?

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How can I get the result of calculation in same page when I select drop down value?

I have tried with ajax. But not fixed. I am new to jquery and ajax.

<!-- drop down selection -->
<select>                                                                 
<option value='1'>1 Pax</option>                                                                 
<option value='2'>2 Pax</option>
<option value='3'>3 Pax</option>
</select>

<p>Price per each: $100</p>

<!-- calculating here -->
<p>Total price: $100 x Value of pax)</p>

Just use jquery. You don't need to use ajax for the calculation.

You need to get the value of the select tag and put it on a variable then you can parse it to integer so you can use it to calculate the total price. Check the example below:

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select id="pax" onchange="calculate()">
  <option value='1' selected>1 Pax</option>
  <option value='2'>2 Pax</option>
  <option value='3'>3 Pax</option>
</select>
<p>Price per each: $100</p>
<p>Total: <span id="total"></span></p>
<script>
  function calculate() {
    var get_value = $("#pax option:selected").text();
    var no_pax = parseInt(get_value);
    var price = 100;
    var total_price = no_pax * price;

    $("#total").text(total_price);

  }
</script>

Handling select box (drop-down list) in a PHP form, Just use jquery. You don't need to use ajax for the calculation. You need to get the value of the select tag and put it on a variable then you can parse it to integer � Calculating values from Drop Down Selections I am creating a performance evaluation form with different rating criteria (1, 2, 3) in drop down selections. I am unable to get the formula to recognize the value of the drop down selection and calculate a total (Performance Appraisal Score section - Page 6)

You can use vanilla JS addEventListener to update the calculation and not AJAX.

// Store HTML elements in JS variables
const paxSelectEle = document.getElementById("pax-select");
const totalPriceEle = document.getElementById("total-price");

// Listen for a change in #pax-select 
paxSelectEle.addEventListener("change", () => {
  // Set the HTML of the total price to
  // 100 * #pax-select value
  totalPriceEle.innerHTML = 100 * paxSelectEle.value;
});
<!-- drop down selection -->
<select id="pax-select">
  <option value='1'>1 Pax</option>   
  <option value='2'>2 Pax</option>
  <option value='3'>3 Pax</option>
</select>

<p>Price per each: $100</p>

<!-- calculating here -->
<p>Total price: $<span id="total-price">100</span></p>

How to get selected value in dropdown list using JavaScript , A select box contains one or more “options”. The selected value from this input was can be read with the standard $_POST array just It forces the user to make a conscious selection from the box and avoids a The second method is just passing the selected value to the header function to redirect to the correct page. Column F: The percentage of the Portfolio's value that the customer pays What I want to happen is I choose an option from the dropdown in Column D e.g. Bi-Annually, and in Column G a formula works out the percentage the customer pays (Column F) on the Porfolio's total value (Column E) and divides it by 2 which gives the fee the customer needs

you can use the following code

$("#ddldemo").change(function() {
  $("#ldldemo").text(100 * parseInt($("#ddldemo").val()));
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<div>
  <select id="ddldemo" name="ddldemo">
    <option value='1'>1 Pax</option>
    <option value='2'>2 Pax</option>
    <option value='3'>3 Pax</option>
  </select>
  <label id="ldldemo"></label>
  <p>Total price: $100 x Value of pax)</p>
</div>

How to get the value of a form element : Drop downs and lists , Mathematics � Operating Systems � DBMS � Computer Networks � Computer Organization and Architecture � Theory of Computation Method 1: Using the value property: The value of the selected Select one from the given options: The elements are sorted according to the source code of the page. Set default value (preselected value) for drop down list with formula. To set default value for the drop down list, you need to create a general drop down list first, and then use a formula. 1. Create a drop down list. Select a cell or a range that you want to place the drop down list, here is K1, and click Data > Data Validation. See

$("#pax").change(function(e) {
  var price = 100;
  $("#total").html($(this).val() * price)
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<select id="pax">
  <option value='0'>Select Pax</option>
  <option value='1'>1 Pax</option>
  <option value='2'>2 Pax</option>
  <option value='3'>3 Pax</option>
</select>
<p>Price per each: $100</p>
<p>Total: <span id="total"></span></p>

JavaScript Examples, This article is in continuation of getting form element values using JavaScript series. To get the index of the selected option in the JavaScript options array of the select element, we Let's say we need to find out the country selected by the user from a select-one list: Build Forms with Calculations using Simfatic Forms � #1 select one cell that will be holding the drop down list. Such as: B1 #2 Go to DATA tab, click Data Validation command under Data Tools group. #3 the Data Validation window will appear. #4 change the Allow: value to “List” from the drop-down list under Validation criteria section. Then select range B2:B4 as Source data. #5 the drop down

One of the way to do it:

1) Giving an id(valueselection) to select option for differentiating with another select element.

2) Put base price and total price inside label with unique id similar to step 1)

3) Calculate initial and price on selected option:

var i= 1;
var base=$('label#baseprice').text();
$('label#total').text(base);
$("select#valueselection").change(function(){
  i=$('select#valueselection').val();
  $('label#total').text(base*i);
});

See snippet below:

var i= 1;
var base=$('label#baseprice').text();
$('label#total').text(base);
$("select#valueselection").change(function(){
  i=$('select#valueselection').val();
  $('label#total').text(base*i);
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<!-- drop down selection -->
<select id="valueselection">                                                                 
<option value='1'>1 Pax</option>                                                                 
<option value='2'>2 Pax</option>
<option value='3'>3 Pax</option>
</select>

<p>Price per each: $<label id="baseprice">100</label></p>

<!-- calculating here -->
<p>Total price: $<label id="total"></label></p>

HTML DOM Option value Property, This will add a checkbox to your page which, if selected, will display your form. To make this example work for your form, replace "23"(2 locations) with the Sometimes you may need to calculate a value (like a total) in one� SCHOOL CODE: Drop down box, the training system uses codes which will have a select number of courses under (I will attempt to attach this) COURSE NUMBER: Drop down box, each course has its own course number assigned to it. COURSE TITLE: Drop down box, the name of the course. REPORT DATE: Date box, the date the soldier reports to school.

How To Get Selected Option Value From Drop Down List Using , Example. Alert the value of the selected option in a drop-down list: var x = document.getElementById("mySelect").selectedIndex; alert(document. I'm not sure exactly what you are trying to achieve here, but I can think of a few things. - You want to access the value, use that value in a database query, and come back to the same page, with a page refresh.

How To Keep Dropdownlist Value Same After Refresh The Page In , Display Value Of Selected Option in Select Tag Using Javascript Source Code: http Duration: 4:46 Posted: 23 Mar 2017 I would like to be able to put items such as Crew Shirt, Work Pants and Fleece Jacket under "Uniform Description" and have the "Unit Cost" auto fill with the appropriate amount i.e $5.00, $6.00, $10.00 then have the total column calculate the Unit Cost by the Qty entered.

The "value" binding, Get Selected Value Of Dropdown In Javascript. Click on link next link should be display on same page javascript,php,jquery,html,css3 I Now whenever the value in cell B2 changes, the GETPIVOTDATA formula will return a new value. Alternatively, you could use a 'Legacy' Drop Down Form Field and set 'Calculate on Exit' to force field updating. However, you would have to use Forms protection. Not everyone is comfortable with VBA, but it would be possible to automate field updating with VBA macro code.

Comments
  • your question is not clear
  • You don't need ajax to make calculation. You can use either jQuery or vanilla javascript.
  • Depends on where you calculation is and what it does. The question implies you already have a server-side calculation that may use non-client-side data to make that calculation which you are currently using a POST for. So you would need ajax in that case. However, it looks like you just want "price * 100", so no need for ajax.
  • If you're using jquery, then you probably don't want to use onchange - better to set up an event with jquery $("#pax").change(function() { $(this).val(); })
  • Welcome to Stack Overflow! Please take the time to describe what the issues are and why this solution helps. Remember, we're here to educate people, not just write code for them.
  • Please take the time to describe what the issues are and why this solution helps. Remember, we're here to educate people, not just write code for them.