ReactJS Blueprint NumberInput Component

Last Updated : 08 Apr, 2022

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.

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;