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JavaScript String charAt() Method

JavaScript string charAt() Method with example, by string literal, by string object (using new keyword), javascript string methods, charAt(index) method, concat(str) method, indexOf(str) method, lastIndexOf(str) method, lowerCase() method, upperCase() method, slice(beginIndex, endIndex) method, trim() method, toLowerCase(), slice(), concat(), charCodeAt() method etc.

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JavaScript String charAt() Method

The JavaScript string charAt() method is used to find out a char value present at the specified index in a string.

The index number starts from 0 and goes to n-1, where n is the length of the string. The index value can't be a negative, greater than or equal to the length of the string.

Syntax

The charAt() method is represented by the following syntax:

String.charAt(index)

Parameter

index - It represent the position of a character.

Returns

A char value

JavaScript String charAt() Method Example

Let's see some examples of charAt() method.

Example 1

Let's see a simple example to print a character.

<script>
var str="TheDeveloperBlog";
document.writeln(str.charAt(4));
</script>

Output:

Example 2

In this example, we will not pass an index value.

<script>
var str="TheDeveloperBlog";
document.writeln(str.charAt());//print first character
</script>

Output:

Example 3

In this example, we will print the last character.

<script>
var str="TheDeveloperBlog";
document.writeln(str.charAt(str.length-1));
</script>

Output:

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