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ReactJS Blueprint NumberInput Component

  • Last Updated : 10 Jul, 2021

BlueprintJS is a React-based UI toolkit for the web. This library is very optimized and popular for building interfaces that are complex data-dense for desktop applications.

NumberInput Component provides a way for users to provide them a number input. It is a basic component to collect numeric data from the user. We can use the following approach in ReactJS to use the ReactJS Blueprint NumberInput Component.

NumberInput Props:

  • allowNumericCharactersOnly: Whether to allow only floating-point number characters in the field.
  • asyncControl: We can control the value of this input with asynchronous updates when this is set to true.
  • buttonPosition: It is used to denote the position of the buttons with respect to the input field.
  • clampValueOnBlur: It is used to indicate whether the value should be clamped to [min, max] on blur.
  • className: It is used to denote the space-delimited list of class names to pass along to a child element.
  • defaultValue: It is used to denote the initial value of the input, for uncontrolled usage.
  • disabled: It is used to indicate whether or not the input is non-interactive.
  • fill: It is used to indicate whether or not the component should take up the full width of its container.
  • inputRef: It is used to denote the ref handler or a ref object that receives HTML <input> element backing this component.
  • intent: It is used to denote the visual intent color to apply to the element.
  • large: It is used to indicate whether or not this input should use large styles.
  • leftIcon: It is used to denote the name of an icon or an icon element to render on the left side of an input.
  • locale: It is used to denote the locale name, which is passed to the component to format the number and allowing to type the number in the specific locale.
  • majorStepSize: It is used to denote the increment between successive values when shift is held.
  • max: It is used to denote the maximum value of the input.
  • min: It is used to denote the minimum value of the input.
  • minorStepSize: It is used to denote the increment between successive values when alt is held.
  • onButtonClick: It is a callback function that is triggered when the value changes due to a button click.
  • onValueChange: It is a callback function that is triggered when the value changes due to typing, arrow keys, or button clicks.
  • placeholder: It is used to denote the placeholder text in the absence of any value.
  • rightElement: It is used to denote the element to render on the right side of an input.
  • selectAllOnFocus: It is used to indicate whether the entire text field should be selected on focus or not.
  • selectAllOnIncrement: It is used to indicate whether the entire text field should be selected on increment.
  • stepSize: It is used to denote the increment between successive values when no modifier keys are held.
  • value: It is used to denote the value to display in the input field.

 

Creating React Application And Installing Module:

  • Step 1: Create a React application using the following command:

    npx create-react-app foldername
  • Step 2: After creating your project folder i.e. foldername, move to it using the following command:

    cd foldername
  • Step 3: After creating the ReactJS application, Install the required module using the following command:

    npm install @blueprintjs/core

Project Structure: It will look like the following.

Project Structure

Example: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

App.js




import React from 'react'
import '@blueprintjs/core/lib/css/blueprint.css';
import { NumericInput } from "@blueprintjs/core";
  
function App() {
    return (
        <div style={{
            display: 'block', width: 400, padding: 30
        }}>
            <h4>ReactJS Blueprint NumericInput Component</h4>
            <NumericInput
                disabled={false}
                leftIcon="user"
                onChange={() => { console.log("Called on change of value") }}
                placeholder="Enter your phone number"
            />
        </div >
    );
}
  
export default App;

Step to Run Application: Run the application using the following command from the root directory of the project:

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output:

Reference: https://blueprintjs.com/docs/#core/components/numeric-input


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