Exploring the power of Regular Expressions in the String Split function

Here is a code snippet in Javascript that comes from Nicholas C. Zakas' renowned book on Javascript:

var text = “apple,banana,orange,strawberry”;
var fruits1 = text.split(“,”); //[“apple”,  “banana”, “orange”, “strawberry”]
var fruits2 = text.split(/[^\,]+/); //[“”, “,”, “,” , “,”, “”]

The function of the second split method can be quite perplexing to comprehend.

Is there anyone who can provide an explanation?

Answer №1

The JavaScript split function will separate based on the delimiter you provide. If you use ",", it will remove the "," from the string and return the characters between as an array.

When using RegEx, you specify what to exclude, such as ",", so it will only include the four instances of "," as an array.

Answer №2

function bb(){
var y1 = 'orange,purple,pink,brown';
var y2=y1.split(",");
document.getElementById('result').innerHTML=y2[3];
}
<div id="result" onClick="bb()">
result
</div>

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Decapitalizing URL string in jQuery GET request

Check out my code below: $.get('top secret url and stuff',function(data){ console.log($("[style='color:white']", data.results_html)[0].innerHTML); window.html = document.createElement('d ...

Error: The Google Translate key is not found in the Node.js AJAX request

I have a basic Node.js script that functions properly when executed locally in the terminal: exports.google_translate = function (translate_text, res) { var Translate = require('@google-cloud/translate'); var translate = new Trans ...

Looking to extract a particular set of information from past records in a GAS web application

Regarding a previous query I made before (Check for login username and password, and then bring data from every previous entry). I've developed a web application to monitor the working hours of employees at my organization. The app is straightforward ...

An unexpected error occurred: Angular is still not functioning correctly even though ng-route has been

Help! I'm encountering this dreaded error message: angular.js:68 Uncaught Error: [$injector:modulerr] Failed to instantiate module usersApp due to: Error: [$injector:modulerr] Failed to instantiate module ngRoute due to: Error: [$injector:nomod] Modu ...

Is it better to pass the entire object or just an attribute from the view to the controller using ngClick in AngularJS

What is the best approach: passing the whole object or just the required attribute from view to controller in AngularJS? For instance: View <div ng-repeat="car in parkingLot"> <div ng-click="checkAvailability( car.id )"></div> < ...

The expected number of calls for the callback function was not met

Our employee webpage is designed to make Ajax calls to the node.js web server in a continuous loop. The problem arises when the callback UpdateTeamArr is expected to be triggered multiple times based on the loop max and the number of department options a ...

Effectively modifying the value or object within a JSON structure of various levels of nesting

My JSON tree consists of nodes and children organized in a specific format: jsonObject = { id:nodeid_1, children: [ { id:nodeid_2, children:[] }, { id:nodeid_3, children:[ { id:nodeid_4, children:[] }, { ...

Is there a way for me to import a variable from one file and use require() to access it in another file?

This is my current folder structure: collegesapp -- |-- node_modules -- express | -- connect | -- jade | -- passport |-- routes -- routes.js ...

Access to Web Share API requires permission

I am currently attempting to integrate the Web Share API feature into my testing web application, but unfortunately, I seem to be encountering some difficulties. Below is the code snippet I have been working with: const newVariable: any = navigator; {newV ...

Using Javascript, declare a constant variable within a try block

Can a variable be set inside a try{} block using const in strict mode with ES6? 'use strict'; const path = require('path'); try { const configPath = path.resolve(process.cwd(), config); } catch(error) { //..... } console.log ...

jQuery trigger event when a DropDownList/SELECT item is selected

My current jQuery code filters a list of links on the page by firing when a link with a specified href is clicked. The id of the link determines which content remains visible. Here's an example: <script type="text/javascript"> $(docume ...

Employ AJAX within a loop, leveraging the power of jQuery

Having a jquery loop where I call and use ajax for each element within the loop. var splitted = [1,2,3]; var categoriesID = [4,5,6]; $.each(splitted, function(index, val) { $.ajax({ type: "GET", url: 'index.php?act=ajax&am ...

A method to deactivate a button cell after it has been clicked within a for loop

I am struggling with correctly disabling a button in my React code when it is clicked. I attempted to pass in an array and handle the button click, but it consistently results in errors. This task seems more complicated than it should be. How can I ensure ...

Why is my filtering and sorting function failing to function properly?

I have a collection of events represented by an array of objects, where each event contains a start date and an end date. My goal is to filter out any events that have already passed based on the current time (now), and then sort the remaining events in d ...

Can I identify the gender of visitors to my blogger.com website?

Is there a way to customize content based on the gender of the visitor using JavaScript or other methods like an AJAX call to an external server with Python/Ruby backend for GData APIs access, or by retrieving cookie information? Google, for instance, ca ...

Assign various JavaScript variables within a PHP foreach loop

I am encountering a frustrating issue where I am trying to display MySQL queries using a PHP foreach loop. However, when attempting to set a JavaScript value for each item in the loop, it only selects either the first or last value and ignores all others. ...

Ways to clear an individual form field using element-ui

I'm currently learning VueJS and incorporating the Element-UI framework into my project. One issue I'm facing is that when there's a validation error upon submitting the login form, I'd like to automatically clear the password field. A ...

Python: Extracting a substring immediately following a specified substring

Imagine I am faced with two lists of strings like this. lst_1 = ['foo','bar','Invoice No: SME2324-AA'] lst_2 = ['trincas','hotel park','delivery date 12-sept-2019','invoice no: 11245'] ...

Angular 2 FileReader: A comprehensive guide

I have a situation where I need to upload an image in section X and pass the base 64 data of the uploaded image to section Y. But I am encountering some difficulties in section X HTML: <input type="file" id="hotspot" (change)="uploadHotSpot($event)"&g ...

Locate hexadecimal values within a list through the use of a regular expression

Given input: A list is provided lst = ['a', '4', 'add', 'e', 'a', 'c0a8d202', '128', '4', '0', '32'] Utilizing regular expression to identify the he ...