get the last character of string with javascript

[SolidSolutions]

I had a difficult time figuring out how to get or test the last character of a string with javascript, so figured I would post it once I found out in case it helps someone else.

I found plenty of removing the last character, but not for just checking what the last character of a string is using javascript.

// create string
var str = new String("No Periods Allowed.");

// alternatively get string from field:
// var str = document.getElementById('textbox').value;

// show last character in the string
alert( str.charAt( str.length-1 ) );

// remove last character from string if a period
if(str.charAt( str.length-1 ) == ".") {
  alert( str.slice(0, -1) );
}

Well, finding that easily on a search would have saved me some time. Happy Coding!

[jimforsyth]

Hi SolidSolutions,

You can also treat a string like an array, i.e.

/* Set string var */
var my_string = 'longboard';

/* Store last character of string */
var last_character = my_string[my_string.length-1];

/* Alert */
alert( last_character );

Jim :)

[lucascaixeta]

Just look at http://jsfiddle.net/FUmhR/114/ :-)

[Dani]

I know this is a really old post, but I just came across it recently, and just in case the jsfiddle becomes unavailable at any point in the future, what's written there is:

var num = "12345";
alert(num.charAt(num.length - 1));

[Biiim]

Wheres the function!

function checkLastChar(string){
   return string.charAt(string.length-1);
}

console.log(checkLastChar('testing'));


function removeTrailingDot(string){
    if(string.charAt(string.length-1) == '.'){
        return string.slice(0, -1);
    }else{
        return string;
    }
}

console.log(removeTrailingDot('something.'));
console.log(removeTrailingDot('something'));

If you find yourself repeating the same code your doing it wrong.

Probably not an absolute truth but it is a pretty workable rule.