How to pass select box selected option value to an Anchor tag as query string

<a href="http://www.mysite.com/page/book.html?" id="search">Search</a> 

<script>
$("#search").click(function(e){
     $(this).prop("href",$(this).prop("href") + "&chkDate=" + $("#tmomths").val()+"-"+ $("#tday").val()+"-"+ $("#tyear").val())
})
</script>

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You might want to spell months correctly - I've used your spelling

To get the value of the selected options:

var myMonth=document.getElementById("tmomths").options[document.getElementById("tmomths").selectedIndex].text;
var myDay=document.getElementById("tday").options[document.getElementById("tday").selectedIndex].text;
var myYear=document.getElementById("tyear").options[document.getElementById("tyear").selectedIndex].text;

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To inner the href in the anchor (give it an id first like id="search");

document.getElementById("search").href="http://www.mysite.com/page/book.html?chkDate="+myMonth+"-"+myDay+"-"+myYear;

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Thanks for replying, but its not working because of 2 things

1) the url I need to pass has to be on a different domain so I am think I need to do this with a form or use a iframe within the site.

2) I modified the code to use it with a datepicker and its picking the arrival date but not passing it.

here is preview

http://www.easterninns.com/test-home/

all the script is in a file called picker.js at

http://www.easterninns.com/js/picker.js

Thanks and appreciate it

Change the script to below, WP uses jQuery instead of $

<script>
jQuery("#search").click(function(e){
     jQuery(this).prop("href",jQuery(this).prop("href") + "jQuery chkDate=" +jQuery("#tmomths").val()+"-"+ jQuery("#tday").val()+"-"+ jQuery("#tyear").val())
})
</script> 

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You also need to do this with your datepicker code in picker.js

When you've made the changes let me know.

Thanks but I don't have tmonths, tday, tyear anymore since I am using the datepicker so what should be there instead of those.

here is the new code I am trying

	<script type="text/javascript">
     jQuery("#booknow").click(function(e){
       jQuery(this).prop("href",jQuery(this).prop("href") + "jQuery arrival_date=" +jQuery("select#arrmonth").val()+"-"+ jQuery("select#arrday").val()+"-"+ jQuery("select#arryear").val() + "jQuery &stay_nights=" + $("#label").val())
     });
	</script>

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Thanks for helping me on this

Beddy time for me, can you bump this tomorrow if I forget.

Sorry Guys I am sorry this is so confusing, but I need to pass the values to the url which is not on the SAME DOMAIN.

will this be possible by using FORM tag and submit button.

Thanks

Here is the test url I am using

http://www.easterninns.com/test-home/

if select the check in and check out dates.  it should display the number of nights next to nights and when clicked on check availability it should append the check in night and number to nights to url.

its not doing any of that :(

Thanks for once again

You're not calling your function anywhere - add this

$(".hasDatepicker").change(function(){
	if($("#depdatepicker").val()!='' && $("#depdatepicker").val()!='') {        
		var diff = ($("#depdatepicker").datepicker("getDate") - $("#arrdatepicker").datepicker("getDate")) / 1000 / 60 / 60 / 24;
		$('#label').html(diff);
	} 
})

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And remove the function dateDifference() {} function

Change this line
$('#booknow').attr('href', newHref);

to

$(this).attr('href', $(this).attr("href") + "&" + newHref);

I assume you should be passing in the number of nights as well?

Thanks for replying, I updated the code.

http://www.easterninns.com/test-home/

 but its still not appending the checking date and how would I append the nights. the correct url after appending should look like

https://www.bookonthenet.net/east/premium/eresmain.aspx?id=sEg2pObaWAi6bXotx8goXeSv206wFocAB8q%2fWSTeEMY%3d#&arrival_date=03-12-2014&stay_nights=2

I need to pass the date to arrival_date and number of nights to stay_nights

the #booknow href is https://www.bookonthenet.net/east/premium/eresmain.aspx?id=sEg2pObaWAi6bXotx8goXeSv206wFocAB8q%2fWSTeEMY%3d#&

Thanks once again

This is a full working copy of the code you need;

jQuery(document).ready(function($) {
	$('#arrdatepicker').datepicker();
	$('#depdatepicker').datepicker();
	
	$('.hasDatepicker').change(function() {
		arrDate = $('#arrdatepicker').datepicker('getDate');
		depDate = $('#depdatepicker').datepicker('getDate');
		
		if (arrDate != null && depDate != null) {
			numOfDays = Math.ceil((depDate - arrDate) / (1000 * 60 * 60 * 24)) ;
			arrivalDate = arrDate.getMonth()+1 + "-" + arrDate.getDate() + "-" + arrDate.getFullYear();
			newHref = $('#booknow').attr('href') + 'arrival_date=' + numOfDays + '&stay_nights=' + numOfDays; 

			$('#label').html(numOfDays);
			$('#booknow').attr('href', newHref);
		}
	});
});

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You need to separate the href appending function from the onchange - people change their dates.

$(".hasDatepicker").change(function(){
	if($("#depdatepicker").val()!='' && $("#depdatepicker").val()!='') {        
		var diff = ($("#depdatepicker").datepicker("getDate") - $("#arrdatepicker").datepicker("getDate")) / 1000 / 60 / 60 / 24;
		$('#label').html(diff);
	} 
}) 
$("#booknow").click(function(){
	arrDate = $('#arrdatepicker').datepicker('getDate');
	arrivalDate = arrDate.getMonth()+1 + "-" + arrDate.getDate() + "-" + arrDate.getFullYear();
	$(this).attr('href', $(this).attr('href') + '&arrival_date=' + numOfDays + '&stay_nights=' + $("#label").html()) 
})

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Ok I have updated the code you guys have given:

If I try like Mr. Chris Code, the dates keep getting appended

here is the code of Mr. Chris

    jQuery(document).ready(function($) {
	$('#arrdatepicker').datepicker();
	$('#depdatepicker').datepicker();
	$('.hasDatepicker').change(function() {
		arrDate = $('#arrdatepicker').datepicker('getDate');
		depDate = $('#depdatepicker').datepicker('getDate');
		
		if (arrDate != null && depDate != null) {
			numOfDays = Math.ceil((depDate - arrDate) / (1000 * 60 * 60 * 24)) ;
			arrivalDate = arrDate.getMonth()+1 + "-" + arrDate.getDate() + "-" + arrDate.getFullYear();
			newHref = $('#booknow').attr('href') + '&arrival_date=' + arrivalDate + '&stay_nights=' + numOfDays; 

			$('#label').html(numOfDays);
			$('#booknow').attr('href', newHref);
		}
	  });
    });

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but If try like Mr. Gary, It's not working at all

and here Mr. Gary

    jQuery(document).ready(function($) {
	$('#arrdatepicker').datepicker();
	$('#depdatepicker').datepicker();
    $(".hasDatepicker").change(function(){
	if($("#depdatepicker").val()!='' && $("#depdatepicker").val()!='') {        
		var diff = ($("#depdatepicker").datepicker("getDate") - $("#arrdatepicker").datepicker("getDate")) / 1000 / 60 / 60 / 24;
		$('#label').html(diff);
	} 
}) 
$("#booknow").click(function(){
	arrDate = $('#arrdatepicker').datepicker('getDate');
	arrivalDate = arrDate.getMonth()+1 + "-" + arrDate.getDate() + "-" + arrDate.getFullYear();
	$(this).attr('href', $(this).attr('href') + '&arrival_date=' + arrivalDate + '&stay_nights=' + $("#label").html());
})
    });

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here is preview again which is currently using Mr. Gary's code.

http://www.easterninns.com/test-home/

Thanks again

Looks like you have my code, which looks to be working fine.
When I am transferred to the booking engine it has the correct dates.

Hmm really I tried selecting dates and hit check it always defaults to today's date in the booking engine

Its only working the first time

I've checked it 4 or 5 times going back and forth and it works fine.
Do an hard refresh in your browser in case you are using old code.

because its still appending the arrival date and number of nights after the first time

https://www.bookonthenet.net/east/premium/eresmain.aspx?id=sEg2pObaWAi6bXotx8goXeSv206wFocAB8q%2fWSTeEMY%3d&arrival_date=3-12-2014&stay_nights=1&arrival_date=3-13-2014&stay_nights=1

Thanks

Ok I think I know what happened, I had target="_blank" that seems to give the issue

How I can get it to work with target="_blank" Thanks

Don't see a target in the link.

I removed it :)

So all good now?

I added target="_blank" back because if I didn't there is no way to get back to main site.

that Id is identifier for us

Brilliant simply Brilliant. I wish I can give you million points for your patience :)

Thanks

Thanks

I think Chris deserved some recognition - it was a collaborative exercise.
(I stole some of his code to extend what I started - if you are happy I'll reopen the question so you can assign him something)

Okiee dokiee :)

Thanks