How to modify my jQuery script to add a math function and pass the result?

How to modify my jQuery script to add a math function and pass the result?

You can find my jQuery in this fiddle http://jsfiddle.net/qSkZW/9/ where the value changes based on your dropdown selection.

What I need is to multiply the selected quantity with a PHP variable. For example when$price = '10'; and you select 3 for quantity, you get an output of 30.

Also, how can I pass the result to display it in the next page ?

Thank you.

What I am trying to clone is the Your Purchase system found here https://www.groupon.com/deals/pizza-delight/confirmation?ms=false&pledge_id=538463 that you add the quantity and you get the final price.

Answer by helloandre for How to modify my jQuery script to add a math function and pass the result?

You can just echo onto the page in your javascript:

Answer by karim79 for How to modify my jQuery script to add a math function and pass the result?

 $("#quantity").change(function () {       var str = $(this).val();       $("#here").text(parseInt(str, 10) * );   }).change();  

Your updated fiddle.

Answer by John Himmelman for How to modify my jQuery script to add a math function and pass the result?

The simplest method is to store the php value in a js variable - which you can reference in your js function. Eg...

In addition you can encode php vars as json for easy js access. Eg...

 array(          'price' => 10,          'description' => 'These socks are steaming HOT!',      ),      'Cool socks' => array(          'price' => 20,          'description' => 'The perfect treat for for feet on those hot summer days!',      ),  );    ?>      

edit: example is scarf compatible

Answer by Lo?s Di Qual for How to modify my jQuery script to add a math function and pass the result?

You can use HTML5 custom attributes:

 ...   

And then get it with jQuery:

 $("#quantity").change(function () {     var el = $(this);     var str = el.val() * el.attr('data-price');      $("#here").text(str);   })   .change();  

Storing it in a var price value is not a good solution as it doesn't specify a select element.

Answer by Paulpro for How to modify my jQuery script to add a math function and pass the result?

Just output the integer directly into the script using php:

$("#quantity").change(function () {      var price = parseInt($(this).val(), 10)*      $("#here").text(price);  }).change();  

Using PHP 5.4 or short tags enabled:

var price = parseInt($(this).val(), 10)*  

Fatal error: Call to a member function getElementsByTagName() on a non-object in D:\XAMPP INSTALLASTION\xampp\htdocs\endunpratama9i\www-stackoverflow-info-proses.php on line 72