JavaScript dataView.getUint8() Method

The dataView.getUint8() is an inbuilt function in dataView that is used to get an unsigned 8-bit integer at the specified location i.e, at byte offset from the start of the dataView. 

Syntax: 

dataView.getUint8(byteOffset)

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

Return value: It returns an unsigned 8-bit integer.

Below are examples of the dataView.getUint8() Method. 

Example 1: 

var buffer = new ArrayBuffer(20); 
var dataview1 = new DataView(buffer, 0, 10); 

dataview1.setUint8(1, 12); 
console.log(dataview1.getUint8(1)); 

Output:  

12

Example 2: 

// Creating buffer with size in byte
var buffer = new ArrayBuffer(20);

// Creating a view
var dataview1 = new DataView(buffer, 0, 10);

// put the data 56 at slot 1
dataview1.setUint8(1, 56);
console.log(dataview1.getUint8(1));

Output:  

56

Example 3: This function convert the float value of PI from 3.14 to 3.

// Creating buffer with size in byte
var buffer = new ArrayBuffer(20);

// Creating a view with slot from o to 10
var dataview1 = new DataView(buffer, 0, 10);

// put the value of PI at slot 1
dataview1.setUint8(1, Math.PI);
console.log(dataview1.getUint8(1));

Output:  

3

Example 4: When there is no data to be stored, then it returns zero (0). 

// Creating buffer with size in byte
var buffer = new ArrayBuffer(20);

// Creating a view
var dataview1 = new DataView(buffer, 0, 10);

// putting no data at slot 1
dataview1.setUint8(1);
console.log(dataview1.getUint8(1));

Output:  

0

We have a complete list of Javascript Date Objects, to check those please go through this JavaScript dataView Complete Reference article.

Supported Browsers: 

• Google Chrome 9 and above
• Edge 12 and above
• Firefox 15 and above
• Internet Explorer 10 and above
• Opera 12.1 and above
• Safari 5.1 and above

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.