How to change URL form with GET method? - forms

Question

Form:
<form action="/test" method="GET">
<input name="cat3" value="1" type="checkbox">
<input name="cat3" value="5" type="checkbox">
<input name="cat3" value="8" type="checkbox">
<input name="cat3" value="18" type="checkbox">
<input type="submit" value="SUBMIT">
</form>
How to change URL form with GET method?
Before: test?cat3=1&cat3=5&cat3=8&cat3=18
After: test?cat3=1,5,8,18
I want to use jQuery.
Many thanks!

Answer 1

Here you go! This example, using jQuery, will grab your form elements as your question is asking and perform a GET request to the desired URL. You may notice the commas encoded as "%2C" - but those will be automatically decoded for you when you read the data on the server side.
$(document).ready(function(){
$('#myForm').submit(function() {
// Create our form object. You could optionally serialize our whole form here if there are additional parameters in the form you want
var params = {
"cat3":""
};
// Loop through the checked items named cat3 and add to our param string
$(this).children('input[name=cat3]:checked').each(function(i,obj){
if( i > 0 ) params.cat3 += ',';
params.cat3 += $(obj).val();
});
// "submit" our form by going to the properly formed GET url
var url = $(this).attr('action') + '?' + $.param( params );
// Sample alert you can remove
alert( "This form will now GET the URL: " + url );
// Perform the submission
window.location.href = url;
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="/test" method="GET" id="myForm">
<input name="cat3" value="1" type="checkbox">
<input name="cat3" value="5" type="checkbox">
<input name="cat3" value="8" type="checkbox">
<input name="cat3" value="18" type="checkbox">
<input type="submit" value="SUBMIT">
</form>

Answer 2

My friend found a solution:
$(document).ready(function() {
// Change Url Form: &cat3=0&cat3=1&cat3=2 -> &cat3=0,1,2
var changeUrlForm = function(catName){
$('form').on('submit', function(){
var myForm = $(this);
var checkbox = myForm.find("input[type=checkbox][name="+ catName +"]");
var catValue = '';
checkbox.each(function(index, element) {
var name = element.name;
var value = element.value;
if (element.checked) {
if (catValue === '') {
catValue += value;
} else {
catValue += '‚' + value;
}
element.disabled = true;
}
});
if (catValue !== '') {
myForm.append('<input type="hidden" name="' + catName + '" value="' + catValue + '" />');
}
});
};
// Press 'Enter' key
$('.search-form .inputbox-search').keypress(function(e) {
if (e.which == 13) {
changeUrlForm('cat3');
changeUrlForm('cat4');
alert(window.location.href);
}
});
// Click to submit button
$('.search-form .btn-submit').on('click', function() {
changeUrlForm('cat3');
changeUrlForm('cat4');
alert(window.location.href);
$(".search-form").submit();
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form action="/test" method="GET" class="search-form">
<input name="cat3" value="1" type="checkbox">1
<input name="cat3" value="3" type="checkbox">3
<input name="cat3" value="5" type="checkbox">5
<input name="cat3" value="7" type="checkbox">7
<br />
<input name="cat4" value="2" type="checkbox">2
<input name="cat4" value="4" type="checkbox">4
<input name="cat4" value="6" type="checkbox">6
<br />
<br />
Submit
<br />
<br />
<input type="text" placeholder="Search" class="inputbox-search" />
</form>