JavaScript dataView.getInt8() Method

Last Updated : 15 Sep, 2020

Below is the example of the dataView.getInt8()() Method.

Example:

<script>
var buffer = new ArrayBuffer(16);
var dataview1 = new DataView(buffer, 0, 4);
dataview1.setInt8(0, 12);
document.write(dataview1.getInt8(0) + "<br>");
</script>
Output:
```
12
```

The dataView.getInt8() is a method in dataView which is used to get an 8-bit integer in the byte at the specified location from the start of the dataView.

Syntax:

dataview.getInt8(byteOffset)

Parameters: It has parameter byteOffset which is offset in a byte and it says from the start of the view were to read the data.

Return value: It returns 8-bit signed integer value.

Example 1:

Input: dataview1.setInt8(0, 123); 
       document.write(dataview1.getInt8(0)); 
Output: 123

Example 2:

Input: dataview.setInt8(3, 45); 
       document.write(dataview.getInt8(3)); 
Output: 45

JavaScript code to show the working of this method:
Code #1:

<script>
  
// Create buffer
var buffer = new ArrayBuffer(16);
  
// Create one view
var dataview1 = new DataView(buffer, 0, 4);
  
// put the data at slot 0
dataview1.setInt8(0, 123);
document.write(dataview1.getInt8(0) + "<br>");
  
// create another view
var dataview2 = new DataView(buffer, 1, 2);
  
// put data at slot 1
dataview2.setInt8(1, 45);
document.write(dataview2.getInt8(1));
  
< /script>                                

Output:

123
45

Code #2:

<script>
  
// Create buffer
var buffer = new ArrayBuffer(16);
var dataview = new DataView(buffer, 0, 10);
  
// put data at slots
dataview.setInt8(0, 12);
dataview.setInt8(1, 23);
dataview.setInt8(2, 34);
dataview.setInt8(3, 45);
dataview.setInt8(4, 67);
dataview.setInt8(5, 78);
dataview.setInt8(6, 89);
dataview.setInt8(7, 90);
dataview.setInt8(8, 123);
  
// print the value using getInt8 method that
// prints the first 8 int
document.write(dataview.getInt8(0) + "<br>");
document.write(dataview.getInt8(1) + "<br>");
document.write(dataview.getInt8(2) + "<br>");
document.write(dataview.getInt8(3) + "<br>");
document.write(dataview.getInt8(4) + "<br>");
document.write(dataview.getInt8(5) + "<br>");
document.write(dataview.getInt8(6) + "<br>");
document.write(dataview.getInt8(7) + "<br>");
document.write(dataview.getInt8(8));
  
< /script>                    

Output:

Supported Browsers:

Google Chrome
Firefox
Apple Safari
Opera

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JavaScript dataView.getInt8() Method