# How to access an object value using variable key in JavaScript?

JavascriptObject Oriented ProgrammingFront End Technology

We know that an object value can be accessed by using a Dot notation or Bracket notation. But we can also access the value using a variable key. Let's look over them in a nutshell.

## Using Dot and Bracket Notations

### Example

In the following example, object value is accessed using Dot and Bracket notation. Using a bracket notation is nothing but using a string key.

Live Demo

<html>
<body>
<script>
let me = {
name: 'javascript'
};
document.write(me.name);
document.write("</br>");
document.write(me['name']);
</script>
</body>
</html>

### Output

javascript
javascript

## Using Variable Key

### Example

In the following example, instead of Dot and Bracket notations, a variable key is used to access the value of an object.

Live Demo

<html>
<body>
<script>
let me = {
name: 'javascript'
};
let key = 'name'
document.write(me[key]);
</script>
</body>
</html>

### Output

javascript
Published on 30-Jul-2019 08:51:57