JavaScript How to get the height and width of window in bootstrap width height window.open,height x width window,javascript width

In bootstrap I have a fixed top nav bar and fixed bottom nav bar. I want to show a large image in the background between the space of those two nav bars and I also want to cover the width of the window. How can I dynamically get the height between the navbars and the width of the window? The window size may change depending on device.So I need it dynamic

Answer:1

$(window).resize(function() {
    var top_nav_height = $("#id_of_top_nav").height();
    var bottom_nav_height = $("#id_of_bottom_nav").height();  
    var window_height = $(window).height();

    var height_of_open_space = window_height - (top_nav_height+bottom_nav_height);

    $("#id_of_img").css({
         height:height_of_open_space+'px';
    });

});

this will be fine with if 0px padding and margin, if not also get that values and subtract from height_of_open_space before applying to img height

Answer:2

Requires jquery:

var viewport = {
    width  : $(window).width(),
    height : $(window).height()
};

//can access dimensions like this:
//viewport.height

Though you won't always get perfect results, different devices behave differently and this gives the viewport dimensions, not the screen dimensions.

Alternatively you could check the width of a data-role="page" element to find the device-width (since it's set to 100% of the device-width):

var deviceWidth = 0;
$(window).bind('resize', function () {
    deviceWidth = $('[data-role="page"]').first().width();
}).trigger('resize');

Answer:3

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