How would u change the color of a webpage using JavaScript

Question

When you are creating a website and what it to change its background-color, if something evaluates to true or if an event happened, then, how would you do it.

Answer 1

/*
if (statement)
ChangeBackgroundColour(Green);
*/
//This is the theoretical code.

if (1==1)
document.body.style.backgroundColor = "green";
//This is practical code.

Answer 2

you can use JavaScript and the getElementById fonction and then you can apply an new color to the background.

Answer 3

Thx

Answer 4

Please uf my abswer is satisfying you, mark it as the best answer.