In this tutorial we will see how to Change Background Color of Dropdown with Dropdown using JavaScript. HTML DOM style Property can be used for this purpose.
Table of Contents
HTML Code
HTML code is given below, in this code we have select tag with four options.
onchange event is used in select tag to execute a JavaScript function.
JavaScript this keyword is used inside this function.
<select name="color" onchange="changeColor(this)">
<option value="red">Red</option>
<option value="yellow">Yellow</option>
<option value="blue">Blue</option>
<option value="green">Green</option>
</select>
JavaScript Code
JavaScript Code is given, in this code we have used HTML DOM style Property to change background color of dropdown.
changeColor() function will be executed when option of dropdown is changed. The term event is used for the JavaScript this which refers to the dropdown tag.
Variable named color is used to store value of dropdown.
.style.backgroundColor is used to change background color of dropdown.
<script>
function changeColor(event)
{
var color = event.value;
event.style.backgroundColor=color;
}
</script>
Demo
Video Tutorial
Watch our video tutorial on Change Background Color of Dropdown with Dropdown using JavaScript.