cssText
The cssText property sets or returns the contents of a style declaration as a string.
object.style.cssText=string
document.getElementById("myP").style.cssText = "background-color:pink;font-size:55px;border:2px dashed green;color:white;"
window.getComputedStyle(elem, null)
var elem = document.getElementById("test");
var theCSSprop = window.getComputedStyle(elem, null).getPropertyValue("background-color");
object.getBoundingClientRect();
rect = element.getBoundingClientRect().top;
The Element.getBoundingClientRect() method returns the size of an element and its position relative to the viewport.
object.getClientRects();
var rectCollection = object.getClientRects();
The Element.getClientRects() method returns a collection of rectangles that indicate the bounding rectangles for each box in a client.