How to get the height of device screen in JavaScript ?
Given an HTML document which is running on a device. The task is to find the height of the working screen device using JavaScript.
Prerequisite – How to get the width of device screen in JavaScript ?
Example 1: This example uses window.innerHeight property to get the height of the device screen. The innerHeight property is used to return the height of the device.
<!DOCTYPE HTML> < html > < head > < title > How to get the device screen Height in JavaScript ? </ title > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > GeeksForGeeks </ h1 > < p id = "GFG_UP" style="font-size: 19px; font-weight: bold;"> </ p > < button onclick = "GFG_Fun()" > click here </ button > < p id = "GFG_DOWN" style="color: green; font-size: 24px; font-weight: bold;"> </ p > <!-- Script to display the device screen Height --> < script > var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); el_up.innerHTML = "Click on the button to get the" + " Height of the device's screen"; function GFG_Fun() { var Height = window.innerHeight; el_down.innerHTML = Height + " pixels"; } </ script > </ body > </ html > |
Output:
Before clicking on the button:
After clicking on the button:
Example 2: This example uses document.documentElement.clientHeight method to get the Height of device screen.
<!DOCTYPE HTML> < html > < head > < title > How to get the device screen Height in JavaScript ? </ title > </ head > < body style = "text-align:center;" > < h1 style = "color:green;" > GeeksForGeeks </ h1 > < p id = "GFG_UP" style="font-size: 19px; font-weight: bold;"> </ p > < button onclick = "GFG_Fun()" > click here </ button > < p id = "GFG_DOWN" style="color: green; font-size: 24px; font-weight: bold;"> </ p > <!-- Script to display the device screen Height --> < script > var el_up = document.getElementById("GFG_UP"); var el_down = document.getElementById("GFG_DOWN"); el_up.innerHTML = "Click on the button to get the" + " Height of the device's screen"; function GFG_Fun() { el_down.innerHTML = document.documentElement.clientHeight + " pixels"; } </ script > </ body > </ html > |
Output:
Before clicking on the button:
After clicking on the button: