JavaScript Split, Split string by last DOT "."

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JavaScript Split,

  1. str = '123.2345.34' , expected output 123.2345 and 34

  2. Str = 123,23.34.23 expected output 123,23.34 and 23

Goal : JS function to Split a string based on dot(from last) in O(n). There may be n number of ,.(commas or dots) in string.

In order to split a string matching only the last character like described you need to use regex "lookahead".

This simple example works for your case:

var array = '123.2345.34'.split(/\.(?=[^\.]+$)/);

JavaScript String lastIndexOf() Method, In order to split a string matching only the last character like described you need to use regex "lookahead". This simple example works for your case: var array  The split() method is used to split a string into an array of substrings, and returns the new array. Tip: If an empty string ("") is used as the separator, the string is split between each character. Note: The split() method does not change the original string.

I will try something like bellow

var splitByLastDot = function(text) {
    var index = text.lastIndexOf('.');
    return [text.slice(0, index), text.slice(index + 1)]


Python, The lastIndexOf() method returns the position of the last occurrence of a specified value in a string. Note: The string is searched from the end to the beginning,  The Headlines hide 1. The split method in JavaScript 2. An example of split string with dot (.) operator 3. An example of split without a separator 4. A demo to use the limit parameter in JavaScript split string method 5. Splitting a phone number with hyphen as separator demo 6. A demo of split …

var arr = str.split(".");      // Split the string using dot as separator
var lastVal = arr.pop();       // Get last element
var firstVal = arr.join(".");  // Re-join the remaining substrings, using dot as separatos
console.log(firstVal +" and "+lastVal);  //Printing result

How to get value of a string after last slash in JavaScript , The splitting of string has always been discussed in various applications and use cases. One of the interesting variation of list splitting can be splitting the list on  Strings. Part 1: We call the split method with a one-character string argument: the "+" char. Part 2: The array returned has 4 strings in it—the plus separates each string so there are fewer delimiters than strings. Part 3: We loop over the array returned from the split method. It has 4 elements, one string for each color word. Array

I came up with this:

var str = '123,23.34.23';
var result = str.replace(/\.([^.]+)$/, ':$1').split(':');
document.getElementById('output').innerHTML = JSON.stringify(result);
<div id="output"></div>

JavaScript split Examples, Split the string by .split() method and put it in a variable(array). Use the .length property to get the length of the array. From the  I'm basically trying to split a string on the last period to capture the file extension. But sometimes the file doesn't have any extension, so I'm anticipating that.. But the problem is that some file names have periods before the end like so

Try this:

var str = '123.2345.34',
    arr = str.split('.'),
    output = arr.pop();
str = arr.join('.');

String.prototype.split(), Separate parts from a string with the split function. Split on characters, strings and patterns. The split() method divides a String into an ordered set of substrings, puts these substrings into an array, and returns the array. The division is done by searching for a pattern; where the pattern is provided as the first parameter in the method's call.

String.prototype.lastIndexOf(), The split() method divides a String into an ordered set of substrings, is an empty (i.e. zero length) string, which appears at the first (or last)  If you want to use .split() just split on "," and take the last element of the resulting array:. var postcode = address.split(",").pop(); If you want to use regex, why not write a regex that directly retrieves the text after the last comma:

How to use Java String.split method to split a string by dot?, JavaScript Demo: String.lastIndexOf() fromIndex Optional: The index of the last character in the string to be considered as the beginning of a match. The default indexOf() · String.prototype.split() · Array.prototype.indexOf  Let’s say the following is our string. String str = "This is demo text.This is sample text!"; To split a string with dot, use the split() method in Java. str.split("[.]", 0); The following is the complete example. Example. Live Demo. public class Demo {public static void main (String [] args) {String str = "This is demo text.This is sample text!"

Python: Split a string on the last occurrence of the delimiter , split(".") does not work for splitting a string with dot (e.g., and will give you an array with zero element. The Sting split(String regex) method wants  In this tutorial, we will learn the difference between string primitives and the String object, how strings are indexed, how to access characters in a string, and common properties and methods used on strings.

  • on what basis you are splitting... any logic ?
  • dot(.)(last occurrence)
  • this will give "123.2345"
  • 123.2345 in str and 34 in output
  • Could you please add an explanation for your answer? :)