Skip to main content

Regular Expression to Replace Special Characters from String using JavaScript

Hello everyone, I am going share the code sample for how to Replace Special Charactersfrom String  like you can see the below image.



In the above output image, you can see, when I clicked on "Remove Special Characters" button to display an alert text-box input text are not showing the special characters in the result string but I putting the some special charters in the in the text-box, you can see, edit and click on below given plunker link.


The JavaScript code with regular expression for Replacing Special Characters from String  as give below

function removeSpecialCharacters() {
    var regExpr = /[^a-zA-Z0-9-. ]/g;
    var userText = document.getElementById('user').value;
    alert(userText.replace(regExpr, ""));
}

The Full Live demo code as given below

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8" />
    <title>JavaScript Regular Expression to Replace Special Characters from String</title>
    <link rel="stylesheet" href="style.css" />
    <script data-require="jquery" data-semver="2.1.4" src="http://code.jquery.com/jquery-2.1.4.min.js"></script>
    <script type="text/javascript">
        function removeSpecialCharacters() {
            var regExpr = /[^a-zA-Z0-9-. ]/g;
            var userText = document.getElementById('user').value;
            alert(userText.replace(regExpr, ""));
        }
    </script>
</head>
<body>
    <div>
        <h1>JavaScript Regular Expression to Replace Escape Special Characters from String</h1>
    </div>
    <div>
        <h2>Enter Your Input Text</h2>
    </div>
    <div>
        <input type="text" id="user" value="Hello Anil' Welcome you  to#$% code-@!sample.$*^com" class="text" />
        <input type="button" id="btnRemove" value="Remove Special Characters" onclick="removeSpecialCharacters()" class="success" />
    </div>
</body>
</html>

The CSS code for Textbox and button as given below

<style>
    h1 {
        color: Green;
    }

    .success {
        background-color: #57A957;
        color: white;
        background-repeat: no-repeat;
        display: inline-block;
        height: 40px;
        vertical-align: middle;
    }

    .text {
        height: 36px;
        position: relative;
        border: 1px solid #cdcdcd;
        font-size: 14px;
        width: 300px;
    }
</style>


The output : go to link http://embed.plnkr.co/06dJ3A/preview

Thank you!




By Anil Singh | Rating of this article (*****)

Popular posts from this blog

List of Countries, Nationalities and their Code In Excel File

Download JSON file for this List - Click on JSON file    Countries List, Nationalities and Code Excel ID Country Country Code Nationality Person 1 UNITED KINGDOM GB British a Briton 2 ARGENTINA AR Argentinian an Argentinian 3 AUSTRALIA AU Australian an Australian 4 BAHAMAS BS Bahamian a Bahamian 5 BELGIUM BE Belgian a Belgian 6 BRAZIL BR Brazilian a Brazilian 7 CANADA CA Canadian a Canadian 8 CHINA CN Chinese a Chinese 9 COLOMBIA CO Colombian a Colombian 10 CUBA CU Cuban a Cuban 11 DOMINICAN REPUBLIC DO Dominican a Dominican 12 ECUADOR EC Ecuadorean an Ecuadorean 13 EL SALVA...

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from ...

React Lifecycle Components | Mounting, Updating, Unmounting

In React, each component has a life-cycle which manipulate during its three main phases. The following three phases are: 1.       Mounting 2.       Updating 3.       Unmounting React does so by “ Mounting ” (adding nodes to the DOM), “ Unmounting ” (removing them from the DOM), and “ Updating ” (making changes to nodes already in the DOM). Mounting - Lifecycle Phase 1 Mounting is used for adding nodes (elements) to the DOM. The React has four built-in methods that gets called, in this order, when mounting a component - 1.       constructor() 2.       getDerivedStateFromProps() 3.       render() 4.       componentDidMount() Note – 1)       The render() method is required and It always be called and the others methods are optional (you will call...

51 Best React Interview Questions and Answers

1) What Is React? React is a fast, open-source, and front-end JavaScript library and It was developed by Facebook in 2011 for building complex, stateful and interactive UI in web as well as mobile Applications. React follows the component based approach which helps you to building reusable and interactive web and mobile user interface (UI) components. React has one of the largest communities supporting it. The high level component Lifecycle - At the highest level component Lifecycle, React components have lifecycle events that are - 1.       Initialization 2.       State/Property Updates 3.       Destruction Explore to detail understanding   -  React Lifecycle Components Reactjs is very fast technology that can be trusted for complex tasks and can simply be trusted for quality outcomes. 2) When Reactjs released? March 2013 3) What Is the current stable version of ...

39 Best Yii2 Interview Questions and Answers - PHP Frameworks

1: What Is Yii framework? 2: Why Yii Is So Fast? 3: Yii Versions? 4: What Are the Prerequisites Yii? 5: Why Use Yii 2.0 Framework? 6: What Are the Benefits of Yii over other Frameworks? 7: What's New in Yii Release 2.0? 8: What Is The First File That Gets Loaded When You Run A Application Using Yii? 9: What Is The First Function That Gets Loaded From A Controller? 10: What Are the core components of Yii2 framework? 11: What Are the great feature of Yii Framework? 12: What Are The Application Structure of Yii 2.0 Framework? 13: What Are the Naming Convention in Yii 2.0 Framework? 14: What Is Request Life-Cycle of Yii 2.0 framework? 15: What Are Yii helpers? 16: What Are the Core Helper Classes in Yii Framework? 17: What Are The Server Requirements to Install Yii 2.0 Framework? 18: How To Customizing Helper Classes in Yii Framework? 19: What Are The Directory Structure of Yii 2.0 Framework? 20: How To Create Directory Structure of Yii Framewor...