js-textfield-validation

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

Validation	Description	Response
alphanumericOnly	To accept alphanumeric only.	string
dollarValue	To create a value with two decimal places.	string
noSpace	To remove all the spaces.	string
removeNum	To remove all the number.	string
numOnly	To remove all the non integer.	string
removeLeadingZero	To remove all the leading zero.	string
singleSpace	To accept single space between two characters only.	string
wordOnly	To remove all non alphabet.	string

Available non-chainable validations

Validation	Description	Response	Remark
validateEmail	To check whether value is an valid email format.	boolean
validateNRIC	To check whether value is an valid NRIC in Singapore.	boolean	Based on http://www.samliew.com/icval/

HOW TO USE

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: "",
    };
  };

  handleChange = event => {
    let validatedName = new Validations(event.target.value).removeNum().singleSpace().value;
    this.setState({ name: validatedName });
  };

  render() {
    return (
      <div>
        <TextField
          id="name"
          label"Name"
          variant="outlined"
          placeholder="Enter your name here."
          value={ this.state.name }
          onChange={ this.handleChange }
        />
      </div>
    );
  };
};

An example with non-chainable method

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