javascript - Visibility of select tag -

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i trying play visibility of select tag,

here html code;

<div id="dialog">             <label id="">hi</label><input type="text" id="input-name" />             <select id="select-asd" class="selectpicker" name="name" style="display:none;" hidden></select>         </div>

i've tried visibility , display properties, not result.

here javascript code;

var selectasd = document.getelementbyid( 'select-asd' ); selectasd.style.display = 'none';

thanks in advance

update** think problem because of "selectpicker"

try this... if want make select visible uncomment javascript 2nd line

var selectasd = document.getelementbyid( 'select-asd' );  selectasd.style.display = 'none';
<div id="dialog">    <label id="">hi</label>    <input type="text" id="input-name" />    <select id="select-asd" class="selectpicker" name="name"></select>  </div>


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