Plain Javascript Delete Item From Drop Down Select December 22, 2023 Post a Comment I got the two following dropdown lists and I want to remove the option chosen in either one. So if option 1 is chosen, it will not be there in list 2. ; } document.getElementById("first").addEventListener("change", function() { show_all(); document.querySelector("#second option[value='"+this.value+"']").style.display="none"; });Copy<selectclass='form-dropdown'name='first'id='first'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select><selectclass='form-dropdown'name='second'id='second'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select>CopyIf you want to avoid the duplicate selection in the both lists you could use :functionshow_all(select_name){ var second_options = document.querySelectorAll("#"+select_name+" option"); for(var i=0;i<second_options.length;i++){ second_options[i].style.display="block"; } } document.getElementById("first").addEventListener("change", function() { show_all("second"); document.querySelector("#second option[value='"+this.value+"']").style.display="none"; }) document.getElementById("second").addEventListener("change", function() { show_all("first"); document.querySelector("#first option[value='"+this.value+"']").style.display="none"; })Copy<selectclass='form-dropdown'name='first'id='first'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select><selectclass='form-dropdown'name='second'id='second'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select>CopySolution 2: Just have a look at this code , working fine for me<html><selectclass='form-dropdown'name='first'id='first'onchange="fun1(this.value)"><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select><selectclass='form-dropdown'name='second'id='second'onchange="fun2(this.value)"><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select></html><script>functionfun1(val){ updateFun2(val) } functionfun2(val){ updateFun1(val) } functionupdateFun2(val){ selectobject=document.getElementById('second'); for (var i=0; i<selectobject.length; i++){ if (selectobject.options[i].value == val ) selectobject.remove(i); } } functionupdateFun1(val){ selectobject=document.getElementById('first'); for (var i=0; i<selectobject.length; i++){ if (selectobject.options[i].value == val ) selectobject.remove(i); } } </script>CopySolution 3: HTML CODE :-<selectclass='form-dropdown'name='first'id='first'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select><selectclass='form-dropdown'name='second'id='second'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'> Workshop 1 </option><optionvalue='Workshop 2'> Workshop 2 </option><optionvalue='Workshop 3'> Workshop 3 </option><optionvalue='Workshop 4'> Workshop 4 </option><optionvalue='Workshop 5'> Workshop 5 </option></select>CopyJavascript Code :-var first = document.getElementById('first'); var second = document.getElementById('second'); var optionOld = document.createElement("option"); first.addEventListener('change', function() { var option = second.querySelector('option[value="' + this.value + '"]'); if(optionOld.text != '') { second.add(optionOld); } optionOld = option; second.removeChild(option); }); CopyI have changed some code in adeneo JSfiddler.Please check it working on my environment.Also Find fiddler https://jsfiddle.net/xh3qb8r6/1/Thanks.Solution 4: You should use change event listener on the first dropdown, check the value of it, and remove the element from the second dropdown which has the same value:document.getElementById("first").addEventListener("change", event=> { if (event.target.value === "none") returndocument.querySelector(`#second [value="${event.target.value}"]`).remove() }) CopySee demo on JS Bin.Solution 5: UpdateI realized that just using the index wasn't working right since #second would diminish in length and it's index would change as well. So I added a for loop to iterate through #second and upon a match of values between #first and #second options, the index is used to target the matching option and then it's removed.on the change event...Get the index of the #first<option> selected.Store index in var, and...Use .remove(index) targeting #secondvar first = document.getElementById('first'); first.addEventListener('change', function(e) { var second = document.getElementById('second'); var selected = this.options[this.selectedIndex].value; for (var i=0; i<second.length; i++){ if (second.options[i].value == selected ) second.remove(i); } }, false);Copy<selectclass='form-dropdown'name='first'id='first'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'>Workshop 1</option><optionvalue='Workshop 2'>Workshop 2</option><optionvalue='Workshop 3'>Workshop 3</option><optionvalue='Workshop 4'>Workshop 4</option><optionvalue='Workshop 5'>Workshop 5</option></select><selectclass='form-dropdown'name='second'id='second'><optionvalue='none'selected>No Choice</option><optionvalue='Workshop 1'>Workshop 1</option><optionvalue='Workshop 2'>Workshop 2</option><optionvalue='Workshop 3'>Workshop 3</option><optionvalue='Workshop 4'>Workshop 4</option><optionvalue='Workshop 5'>Workshop 5</option></select>Copy Share Post a Comment for "Plain Javascript Delete Item From Drop Down Select" Top Question JQuery: If A Table Header Has A Class, Add Class To Table Cell Let's say I have the following html: … WebRTC Video Constraints Not Working I'm trying to get a lower resolution from the webcam na… HasClass Doesn't Work In My Js Code? 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