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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