JavaScript DataView.getUint8() method

The JavaScript DataView.getUint8() is an inbuilt method in dataView. It is used to get a unsigned 8-bit integer(unsigned byte) number at a specified location.

Syntax

Parameters

byteoffset: The offset, in a byte, from the start of the view where to read the data.

Return value

This method returns an unsigned 8-bit integer number.

Browser Support

Chrome	9
Safari	5.1
Firefox	15
Opera	12.1

Example 1

<script>
//JavaScript to illustrate dataview.getUint8() method
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(8);
// creating a view
var arr = new DataView(JavaTpoint);
// put the value 33.4 at slot 1
arr.setUint8(1,33.4);
document.write("Convert the Float value 33.4 to:<br><br>");
document.write(arr.getUint8(1));
//expected output: 33
</script>

Test it Now

Output:

Convert the Float value 33.4 to:

33

Example 2

<script>
//JavaScript to illustrate dataview.getUint8() method
// if there is no data to be stored then it returns Nan
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(10);
// creating a view
var arr = new DataView(JavaTpoint);
// NO Data
arr.setUint8(1);
document.write(" If there is no data to be stored, then Output will Be:<br><br>")
document.write(arr.getUint8(1));
//expected output: 0
</script>

Test it Now

Output:

If there is no data to be stored, then Output will Be:

0

Example 3

<script>
//JavaScript to illustrate dataview.getUint8() method
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(10);
// creating a view
var arr = new DataView(JavaTpoint);
//We can also use math function like Math.PI
arr.setUint8(1,Math.PI);
document.write("Convert the PI value 3.14 to <br><br>");
document.write(arr.getUint8(1));
//expected output: 3 
</script>

Test it Now

Output:

Convert the PI value 3.14 to 

3

Example 4

<script>
//JavaScript to illustrate dataview.getUint8() method
// creating a ArrayBuffer 
var JavaTpoint = new ArrayBuffer(10);
// creating a view
var arr = new DataView(JavaTpoint);
// put the value 67 at slot 1
arr.setUint8(1,67);
document.write("If we give an Integer value then Output will  be Integer<br><br>");
document.write(arr.getUint8(1));
//expected output: 67
</script>

Test it Now

Output:

If we give an Integer value then Output will be Integer

67

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