jquery - Nested dropdown lists : depending values -

-

i have 2 dropdown lists values. when select value in first, want return elements same selected value in second. second list depending of first's list selection. how ?

<div class="form-group">     <label for="first">first list</label>         <select id="first" class="form-control" role="listbox" onchange="filterlist();">             <option value="select level 1" selected="selected">select...</option>             <option value="option 1">option 1</option>             <option value="option 2">option 2</option>         </select> </div> <div class="form-group">     <label for="second">second list</label>         <select id="second" class="form-control" role="listbox">             <option value="select level 2" data-group="select" selected="selected">select...</option>             <option value="option 1 - 1" data-group="option 1">first list 1 - element 1</option>             <option value="option 1 - 2" data-group="option 1">first list 1 - element 2</option>             <option value="option 2 - 1" data-group="option 2">first list 2 - element 1</option>             <option value="option 2 - 2" data-group="option 2">first list 2 - element 2</option>         </select> </div>

jquery script

function filterlist(){      var first = $("#first").find('option:selected').text(); // stores first list selected elements      $("#option-container").children().appendto("#second"); // moves <option> contained in #option-container <select>      var tomove = $("#second").children("[data-group!='"+first+"']"); // selects elements move out      tomove.appendto("#option-container"); // moves elements in #option-container      $("#second").removeattr("disabled"); // enables select };

you can hide option setting css-property display none, jquery's $.hide() function does. or can set disabled-attribute on element ($.attr('disabled', 'disabled')) make option unselectable.

edit

a small example of (though haven't tested it):

$('#first').change(function() {     var value = $(this).val();     $('#second').children().attr('disabled', 'disabled');     $('#second').children('[data-group=' + value + ']').removeattr('disabled'); });

this each time in first dropdown selected, disable options in second dropdown , re-enable options in second dropdown data-group-attribute corresponding selected value first dropdown.


Comments

Post a Comment

Popular posts from this blog

magento2 - Magento 2 admin grid add filter to collection -

-
i created grid in admin xml ui components. need filter collection via url parameter , dont know how achieve that. tried inject requestinterface collection, filter didnt work. di.xml <virtualtype name="slidelistingdataprovider" type="magento\framework\view\element\uicomponent\dataprovider\dataprovider"> <arguments> <argument name="collection" xsi:type="object" shared="false">xxx\xxx\model\resourcemodel\grid\slide\collection</argument> <argument name="filterpool" xsi:type="object" shared="false">slidelistingfilterpool</argument> <!-- define new object filters --> </arguments> </virtualtype> <virtualtype name="slidelistingfilterpool" type="magento\framework\view\element\uicomponent\dataprovider\filterpool"> <arguments> <argument name="applier...
Read more

Android volley - avoid multiple requests of the same kind to the server? -

-
i using volley upload list of images server. happens within service. once image uploaded remove list. problem arises when internet connection breaks. when internet connection breaks , comes again thinking of adding images yet uploaded request queue. this can result in more 1 copy of same image saved on server request same image might have gone through before getting rseponse. how can address scenario? i'm not quite sure why you're using service schedule requests volley automatically runs it's request in seperate thread. nevertheless can listen both request results, successful , unsuccessful adding listeners. you can remove image list schedule request using volley. if succeeds can carry on desired, if fails can add again list. public static request getimageuploadrequest(final string image) { response.listener<t> responselistener = new response.listener<t>() { @override public void onresponse(t response...
Read more

Combining PHP Registration and Login into one class with multiple functions in one PHP file -

-
i'm trying combine registration, activation , login scripts php website backend script front end developer can pass variables different forms to. my question whether appropriate approach this. don't want have lot of php files different pieces of application developing. far have written following 2 functions login, register , activate user front end developer can call: <?php /** * created phpstorm. * user: karl * date: 26/07/2016 * time: 02:25 */ class users { function register_user($email, $password, $user_name) { $server_name = "localhost"; $u_name = "root"; $db_password = "root"; $db_name = "betamath_graspe"; //email notification variable $from_address="info@slack.com"; //registration form $msg_reg_user='username taken. please choose different username'; $msg_reg_email='email registered'; $msg_reg_active=...
Read more