How to get Last digit of number

Question

How to extract last(end) digit of the Number value using jquery. because i have to check the last digit of number is 0 or 5. so how to get last digit after decimal point

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Answer 1

you can just convert to string

var toText = test.toString(); //convert to string
var lastChar = toText.slice(-1); //gets last character
var lastDigit = +(lastChar); //convert last character to number

console.log(lastDigit); //5

Answer 2

Try this one:

var test = 2354.55;
var lastone = +test.toString().split('').pop();

console.log("lastone-->", lastone, "<--typeof", typeof lastone);

// with es6 tagged template and es6 spread
let getLastDigit = (str, num)=>{
  return num.toString();
};
let test2 = 2354.55;
let lastone2 = +[...getLastDigit`${test2}`].pop();

console.log("lastone2-->", lastone2, "<--typeof", typeof lastone2);

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Updates with ES6/ES2015:

We can use tagged template in such case as numbers are not iterable. So, we need to convert the number to a string representation of it. Then just spread it and get the last number popped.

Answer 3

Just in one line.

const getLastDigit = num => +(num + '').slice(-1);

console.log(getLastDigit(12345)) // Expect 5

Answer 4

There is a JS function .charAt() you can use that to find the last digit

var num = 23.56
var str = num.toString();
var lastDigit = str.charAt(str.length-1);
alert(lastDigit);

Answer 5

This worked for us:

var sampleNumber = 123456789,
  lastDigit = sampleNumber % 10;
console.log('The last digit of ', sampleNumber, ' is ', lastDigit);

Works for decimals:

var sampleNumber = 12345678.89,
  lastDigit = Number.isInteger(sampleNumber) ? sampleNumber % 10
    : sampleNumber.toString().slice(-1);
console.log('The last digit of ', sampleNumber, ' is ', lastDigit);

Click on Run code snippet to verify.

Answer 6

If you want the digit in the hundredths place, then you can do the following:

test * 100 % 10

The problem with convert to string and getting the last digit is that it does not give the hundredths place value for whole numbers.