How to set all the border top properties in one declaration with JavaScript?

To set all the border top properties in a single declaration, use the borderTop property. With this property, you can set the border-top-width, border-top-style, and border-top-color property.


You can try to run the following code to learn how to work with border-top properties in JavaScript −

Live Demo

<!DOCTYPE html>
         #box {
            border: thick solid gray;
            width: 300px;
            height: 200px
      <div id="box">Demo Text</div>
      <button type="button" onclick="display()">Change top border</button>
         function display() {
            document.getElementById("box").style.borderTop = "thick solid #000000";

Updated on: 23-Jun-2020


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