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String Methods-tutorial

In JavaScript, string methods help us manipulate and work with text easily. Below are some of the most common and useful string methods every beginner should know.

charAt(index) Method

The charAt() method returns the character at the specified index (position starts from 0).

Example:

<script>
    var str = "javascript";
    document.write(str.charAt(2));  
</script>

Output

concat(str) Method

The concat() method is used to join two or more strings together.

Example:

<script>
    var s1 = "javascript ";
    var s2 = "concat example";
    var s3 = s1.concat(s2);
    document.write(s3);  
</script>

Output

indexOf(str) Method

The indexOf() method returns the index position of the first occurrence of a specified substring.
If the substring is not found, it returns -1.

Example:

<script>
    var s1 = "javascript from javatpoint indexof";
    var n = s1.indexOf("from");
    document.write(n);  
</script>

Output

lastIndexOf(str) Method

The lastIndexOf() method returns the index position of the last occurrence of a specified substring.

Example:

<script>
    var s1 = "javascript from javatpoint indexof";
    var n = s1.lastIndexOf("java");
    document.write(n);  
</script>

Output

Tip: These methods make it easy to handle text dynamically in web applications.