The method I am going to cover in today’s post is very similar to the last post (indexOf). Today, I am going to cover the charAt() method. This string method searches through a string to find a particular character whereas indexOf() is primarily used to find substrings or groups of characters.
Let’s take a look at an example…
// Variable to house string var myString = "This is my cool string!"; // Variable to house results of charAt() var findC = myString.charAt(11); // Output results...should be 'c' console.log(findC);
As you can see from above, we pass charAt() a numeric value as opposed to an actual string like indexOf(). This value is the location of the character. This is also zero-based in its indexing count. So the ‘c’ is in the twelfth position, but since we start with zero, I used eleven (11).
So you can utilize this function to pick out certain characters and use them in your coding. For example, say you have a listing of employees and you want to output all of the ones that have a last name that begins with ‘P’. Well, you can do something like this…
if(lastName.charAt(0) === 'P'){
// doSomething();
}
Happy Coding!
Clay Hess
