apply CSS style to particular elements dynamically

Question

I have a div with paragraphs inside:

  
...
  
...

I want dynamically to apply

Answer 1

You can apply the CSS dynamically for this example of yours in this way:

function applyCSS()
{
    $("div > p").css({
        "background": "#fff",
        "color": "#000"
    });
}

Or, when you wanna apply this when the page loads:

$(document).ready(function(){
    applyCSS();
});