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JavaScript: Remove items from a dropdown list

JavaScript DOM: Exercise-8 with Solution

Write a JavaScript program to remove items from a dropdown list.

Sample HTML file: 


<!DOCTYPE html>
<html><head>
<meta charset=utf-8 />
<title>Remove items from a dropdown list</title>
</head><body><form>
<select id="colorSelect">
<option>Red</option>
<option>Green</option>
<option>White</option>
<option>Black</option>
</select>
<input type="button" onclick="removecolor()" value="Select and Remove">
</form></body></html>

Sample Solution: -

HTML Code:

<!DOCTYPE html> 
<html> 
<head> 
<style type="text/css"> 
body {margin: 30px;} 
</style>  
<meta charset=utf-8 /> 
<title>Remove items from a dropdown list</title> 
</head><body><form> 
<select id="colorSelect"> 
<option>Red</option> 
<option>Green</option> 
<option>White</option> 
<option>Black</option> 
</select> 
<input type="button" onclick="removecolor()" value="Select and Remove"> 
</form></body></html>

JavaScript Code:

function removecolor()
{
var x=document.getElementById("colorSelect");
x.remove(x.selectedIndex);
}

Sample Output:

javascript-dom-exercise-8

Flowchart:

Flowchart: JavaScript - Remove items from a dropdown list.

Live Demo:

See the Pen javascript-dom-exercise-8 by w3resource (@w3resource) on CodePen.


Improve this sample solution and post your code through Disqus

Previous: Write a JavaScript function that creates a table, accept row, column numbers from the user, and input row-column number as content (e.g. Row-0 Column-0) of a cell.
Next: Write a JavaScript program to count and display the items of a dropdown list, in an alert window.

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JavaScript: Tips of the Day

How to insert an item into an array at a specific index (JavaScript)?

What you want is the splice function on the native array object.

arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2:

var arr = [];
arr[0] = "Jani";
arr[1] = "Hege";
arr[2] = "Stale";
arr[3] = "Kai Jim";
arr[4] = "Borge";

console.log(arr.join());
arr.splice(2, 0, "Lene");
console.log(arr.join());

Ref: https://bit.ly/2BXbp04