Question

I want to get the height of the viewport using ExtJs or native javascript.

How can i get this height ? I am not using any extjs viewport container.

If its not possible using ExtJs then how can i find the exact height of the view port ?

Thanks!!

Answer 1

How about

window.innerWidth
window.innerHeight

in ExtJS you can use getViewSize( )

Another plain JS approach is

This function will return any document height (cross-browser) and if the documents body height is less than the viewport height then it will return the viewport height instead. Cause I think your doc is empty at the time you check this should perfectly work for you.

function getDocHeight() {
    var D = document;
    return Math.max(
        Math.max(D.body.scrollHeight, D.documentElement.scrollHeight),
        Math.max(D.body.offsetHeight, D.documentElement.offsetHeight),
        Math.max(D.body.clientHeight, D.documentElement.clientHeight)
    );
}