js-textfield-validation
v1.1.0
Published
An npm Package to validate textfield value.
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Textfield Validation
An npm Package to validate textfield value.
How to install
# with npm
npm install js-textfield-validation
API
There are chainable and non-chainable methods.
Available chainable validations
| Methods | Description |
| --- | --- |
| alphanumericOnly()
| To accept alphanumeric only. |
| dollarValue()
| To create a value with two decimal places. |
| ipAddress()
| To accept number and dot only. |
| noSpace()
| To remove all the spaces. |
| numOnly()
| To remove all the non integer. |
| removeNum()
| To remove all the number. |
| removeLeadingZero()
| To remove all the leading zero. |
| singleSpace()
| To accept single space between two characters only. |
| truncate(length: integer)
| To truncate the value to a specifc length. |
| wordOnly()
| To remove all non alphabet. |
Available non-chainable validations
| Methods | Description | Output | Remark |
| --- | --- | --- | --- |
| validateAlphanumericOnly(value: string)
| To check whether the value contains alphanumberic only. | boolean
| nil |
| validateEmail(email: string)
| To check whether value is a valid email format. | boolean
| nil |
| validateNRIC(nric: string)
| To check whether value is an valid NRIC in Singapore. | boolean
| Source |
| validateIPAddress(address: string)
| To check whether value is a valid IP address. | boolean
| nil |
HOW TO USE
Include chainable methods
import Validation from "js-textfield-validation";
Include non-chainable methods
import { validateEmail, validateIPAddress, validateNRIC } from "js-textfield-validation";
An example with ReactJS, material-ui and chainable methods
import React, { Component } from "react";
import TextField from "@material-ui/core/TextField";
import Validation from "js-textfield-validation";
class App extends Component {
constructor() {
super();
this.state = {
name: "",
error: "",
};
};
handleChange = event => {
let validatedName = new Validations(event.target.value).removeNum().singleSpace();
if (validatedName.error !== "") {
this.setState({ name: validatedName.value, error: validatedName.error });
} else {
this.setState({ name: validatedName, error: "" });
}
};
render() {
return (
<div>
<TextField
id="name"
label"Name"
variant="outlined"
placeholder="Enter your name here."
value={ this.state.name }
onChange={ this.handleChange }
helperText={ this.state.error }
/>
</div>
);
};
};
An example with ReactJS, material-ui and chainable and non-chainable methods
import React, { Component } from "react";
import TextField from "@material-ui/core/TextField";
import Validation, { validateEmail } from "js-textfield-validation";
class App extends Component {
constructor() {
super();
this.state = {
email: "",
errorMessage: ""
};
};
handleChange = event => {
let newEmail = new Validation(event.target.value).noSpace().value;
const isValidEmail = validateEmail(newEmail);
if (isValidEmail) {
this.setState({ email: newEmail, errorMessage: "" })
} else {
this.setState({ email: newEmail, errorMessage: "Invalid email" })
}
};
render() {
return (
<div>
<TextField
id="email"
label"Email"
variant="outlined"
placeholder="Enter your email here."
value={ this.state.email }
onChange={ this.handleChange }
/>
<div>{ this.state.errorMessage }</div>
</div>
);
};
};
LICENSE
LICENSE.md