Quick Reference
The String codePointAt() method returns the Unicode of the character at a specified position in a string.
<!-- html element to place output -->
<p id="my_output"></p>Example 1:
// variables
let my_text = 'Hello World';
let my_letter = my_text.codePointAt(6);
// output to the HTML element
document.getElementById('my_output').innerHTML = my_letter;Note
When counting characters in a string, the count starts from zero NOT one. So character 1 is position [0], character 2 is position [1], and character 3 is position [2] … and so on.
Example 2:
// variables
let my_text = 'Hello World';
let my_letter = my_text.codePointAt(my_text.length-2);
// output to the HTML element
document.getElementById('my_output').innerHTML = my_letter;Note
To get a specific letter counting from the end of the string, we use the length method minus how many letters from the end we want to retrieve.
Output
Example 1:
87Example 2:
76Syntax
string.codePointAt(index)JavaScript Notes:
- When using JavaScript, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
- JavaScript is a case-sensitive language; firstName is NOT the same as firstname
- Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on
- JavaScript variables must begin with a letter, $, or _
- JavaScript variables are case sensitive (x is not the same as X)
We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.