Javascript equivalent of Jquery hide and show -


this question has answer here:

i have simple hide , show jquery code , want ask if there equivalent of javascript? here's code.

jquery:

$(document).ready(function(){ $("#mybutton").hide();    $("#1").click(function(){       $("#mybutton").show();          $("#mybutton").click(function(){          $("#mybutton").hide();         });    }); });

html:

<select> <option id="1">science</option> </select> <input type="button" value="click" id="mybutton"/>

i followed codes in comments below not working:

javascript:

<script>     document.getelementbyid('mybutton').style.display = 'none';     function selectoptionsupdated(select){     document.getelementbyid('mybutton').style.display = 'block';      } </script>

html:

<select onselect="selectoptionsupdated(this)"> <option id="1">science</option> </select> <input type="button" value="click" id="mybutton"/>

what want @ first button hidden, , when click <option> tag "science" button appears , when click button, button hidden after being clicked. , if there more <option> tags? sorry i'm still beginner. appreciated.

this simple

document.getelementbyid('myelement').style.display = 'block'; // show document.getelementbyid('myelement').style.display = 'none'; // hide

add onselect="selectoptionsupdated(this) in select

then

function selectoptionsupdated(select){ //do stuff here   }

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