How to pass the javascript variable value to the classic asp variable? [duplicate]

Question

HTML:

<div>
<select type="text" id="filterType" class="myInput">
    <option id="one">one</option>
    <option id="two">two</option>
    <option id="three">three</option>
</select>
</div>

JS:

var currentFilterDropDownOpt;
$("#filterType").change(function(){
    currentFilterDropDownOpt = $(this).val();
});

I want to set this currentFilterDropDownOpt to my asp variable.

ASP:

<%
    DIM filterDD
    filterDD = currentFilterDropDownOpt; //something like this
%>

Is there anyone can help?

TIA

Wrap your drop-down in a <form> that points to the ASP you want to process the value in, make sure the select has a name attribute then call it via that name in the ASP page using Request("select-name-here"). Don't forget the form will need something to trigger the submit, be it a submit button or through code using document.yourform.submit();. — user692942
– user692942, Commented Feb 22, 2018 at 21:25

Anthony L · Accepted Answer · 2018-02-22 19:56:01Z

0

JS is client-side and ASP is server-side. You cannot transfer a client-side generated variable to your server-side script directly. If you really need to process the variable via ASP, you should send it to the server via an asynchronous request and process the response via JS.

For instance

$("#filterType").change(function(){
  var currentFilterDropDownOpt = $(this).val();
  $.ajax("YOUR_SERVER_LOCATION?currentFilterDropDownOpt="+currentFilterDropDownOpt, {
    success: function(data) {
       //do something with the response
    },
    error: function() {
       //do something if there is an error
    }
  });
});

edited Feb 22, 2018 at 19:56

answered Feb 22, 2018 at 19:46

Anthony L

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5 Comments

Swati Singh Over a year ago

can u tell me how to do that?

Anthony L Over a year ago

It can be implemented in a number of different ways. I've added a basic example of how it could be accomplished.

user692942 Over a year ago

Doesn't have to be AJAX a simple form submit will work just as well. Not to mention if you are going to advocate AJAX calls at least pass them as a POST and not a GET.

Swati Singh Over a year ago

@AnthonyL i have tried this but its not working.

user692942 Over a year ago

@SwatiSingh about as descriptive as your question, “it’s not working” doesn’t help us help you. What happened did it error, what was the error etc...

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