The style property returns a CSSStyleDeclaration object, which represents an element's style attribute.
Add a red color to an <h1> element:
document.getElementById("myH1").style.color = "red";
Click the button to add a color to the H1 element.
<!DOCTYPE html> <html> <body> <h1 id="myH1">How to change the style of a header</h1> <button onclick="myFunction()">Test</button> <script> function myFunction() {//ww w .j av a 2 s. c o m document.getElementById("myH1").style.color = "red"; } </script> </body> </html>
Element style Property returns a CSSStyleDeclaration object representing an element's style attribute.