JavaScript | String charAt()
str.charAT() Returns character at given index of string.
character = str.charAt(index)
Arguments
The only argument to this function is the index in the string from where the single character is to be extracted. The range of this index is between 0 and length – 1, including the limits. If no index is specified then the first character of the string is returned as 0 is the default index used for this function.
Return value
This function returns a single character located at the index specified as the argument to the function. If the index is out of range, then this function returns an empty string.
Examples for the above function are provided below:
Example 1:
var str = 'JavaScript is object oriented language'; print(str.charAt(9));
Output:
t
In this example the function charAt() finds the the character at index 9 and returns it.
Example 2:
var str = 'JavaScript is object oriented language'; print(str.charAt(50));
Output:
In this example the function charAt() finds the the character at index 50. Since the index is out of bounds for the given string therefore the function returns “” an empty string.
Codes for the above function are provided below:
Program 1:
// JavaScript to illustrate charAt() function <script> function func() { // Original string var str = 'JavaScript is object oriented language'; // Finding the character at given index var value = str.charAt(9); document.write(value); } func(); </script> |
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Output:
t
Program 2:
<script> // JavaScript to illustrate charAt() function function func() { // Original string var str = 'JavaScript is object oriented language'; // Finding the character at given index var value = str.charAt(50); document.write(value); } func(); </script> |
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Output:
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