Best way to check the mobile device resolution height

Question

I have form page in HTML5. The page is too much big so I added a scroll: jquery.nicescroll

I wrapped the form with <div> and set a iPhone 4 height:480px and run the niceScroll constructor function.

<div id = "scroller"> 
<form>
..
...
......
</form>
</div>

<script>
$('#scroller').niceScroll(); 
</script>

It works fine, but the issue is that I should give to each device his own height : (height-40px) so it will look nice on device. For example: for Iphone4 height:480px, for iPhone5: 568px,Samsung S2 533 etc.

What is the best way to check the height value of device so I can use it after that? Now I can check the device company with userAgent:

navigator.userAgent.indexOf("iPhone")

But I need to know exactly the model

Answer 1

Simply use this:

 $(window).height();

Read here

Answer 2

/* Smartphones (portrait and landscape) ----------- */
@media only screen 
and (min-device-width : 320px) 
and (max-device-width : 480px) {
/* Styles */
}

/* Smartphones (landscape) ----------- */
@media only screen 
and (min-width : 321px) {
/* Styles */
}

/* Smartphones (portrait) ----------- */
@media only screen 
and (max-width : 320px) {
/* Styles */
}

/* iPads (portrait and landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) {
/* Styles */
}

/* iPads (landscape) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : landscape) {
/* Styles */
}

/* iPads (portrait) ----------- */
@media only screen 
and (min-device-width : 768px) 
and (max-device-width : 1024px) 
and (orientation : portrait) {
/* Styles */
}

/* Desktops and laptops ----------- */
@media only screen 
and (min-width : 1224px) {
/* Styles */
}

/* Large screens ----------- */
@media only screen 
and (min-width : 1824px) {
/* Styles */
}

/* iPhone 4 ----------- */
@media
only screen and (-webkit-min-device-pixel-ratio : 1.5),
only screen and (min-device-pixel-ratio : 1.5) {
/* Styles */
}

Please set the multipal device height in this code.