The task is to detect a device, whether the device is Android Phone or not using JavaScript.
Approach 1:
- Use navigator.userAgent property to get the value of the user-agent header sent by the browser to the server.
- Check the index of ‘android’ in the userAgent.
- If the index is greater then -1 then it is android phone else not android phone.
Example: This example checks whether the device is android phone or not.
<!DOCTYPE HTML> <html>
<head>
<title>
How to detect Android Phone
using 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>
var el_up = document.getElementById("GFG_UP");
var el_down = document.getElementById("GFG_DOWN");
el_up.innerHTML = "Click on the button to detect if"
+ " the device is android phone.";
function GFG_Fun() {
var res = "Device is not Android Phone";
var userAgent = navigator.userAgent.toLowerCase();
var Android = userAgent.indexOf("android") > -1;
if(Android) {
res = "Device is Android Phone";
}
el_down.innerHTML = res;
}
</script>
</body>
</html>
|
Output:
-
Before Clicking the Button:
-
Run on Computer and Click the Button:
-
Run on Android Mobile and Click the Button:
Approach 2:
- Get the navigator.userAgent Property in a variable name userAgent.
- Check for the ‘android’ in the userAgent by using RegExp
- If the value of Android is not 0 then it is android phone else not android phone.
Example:
<!DOCTYPE HTML> <html>
<head>
<title>
How to detect Android Phone
using 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>
var el_up = document.getElementById("GFG_UP");
var el_down = document.getElementById("GFG_DOWN");
el_up.innerHTML = "Click on the button to detect if"
+ " the device is android phone.";
function GFG_Fun() {
var res = "Device is not Android Phone";
var Android = /(android)/i.test(navigator.userAgent);
if(Android) {
res = "Device is Android Phone";
}
el_down.innerHTML = res;
}
</script>
</body>
</html>
|
Output:
-
Before Clicking the Button:
-
Run on Computer and Click the Button:
-
Run on Android Mobile and Click the Button: