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:
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