Create an Emi Calculator Elementor Widget [WordPress]

An EMI calculator widget for Elementor, a popular page builder for WordPress, can be created using a combination of HTML, CSS, and JavaScript.

Here’s an example of how you could create a custom EMI calculator widget for Elementor using a plugin:

1. Create a new folder for your plugin in the wp-content/plugins directory of your WordPress installation. Give the folder a unique name, such as elementor-emi-calculator.

2. Create a file named elementor-emi-calculator.php at the root of the plugin directory, this file will hold the plugin’s main code

<?php
/*
Plugin Name: Elementor EMI Calculator
Description: Custom EMI Calculator widget for Elementor
*/

class Elementor_EMI_Calculator_Widget extends \Elementor\Widget_Base {

    public function get_name() {
        return 'elementor-emi-calculator';
    }

    public function get_title() {
        return __( 'EMI Calculator', 'elementor-emi-calculator' );
    }

    public function get_icon() {
        return 'eicon-calculator';
    }

    public function get_categories() {
        return [ 'general' ];
    }

    protected function _register_controls() {
        // widget controls here
    }

    protected function render() {
        // render the EMI calculator form
    }
}

3. Create the controls and render functions in the class Elementor_EMI_Calculator_Widget :

    protected function _register_controls() {
        $this->start_controls_section(
            'section_calculator',
            [
                'label' => __( 'EMI Calculator', 'elementor-emi-calculator' ),
            ]
        );

        // Add inputs for the Loan Amount, Interest Rate, and Loan Term
        $this->add_control(
            'loan_amount',
            [
                'label' => __( 'Loan Amount', 'elementor-emi-calculator' ),
                'type' => \Elementor\Controls_Manager::NUMBER,
                'default' => __( '250000', 'elementor-emi-calculator' ),
            ]
        );

        $this->add_control(
            'interest_rate',
            [
                'label' => __( 'Interest Rate', 'elementor-emi-calculator' ),
                'type' => \Elementor\Controls_Manager::NUMBER,
                'default' => __( '8.5', 'elementor-emi-calculator' ),
            ]
        );

        $this->add_control(
            'loan_term',
            [
                'label' => __( 'Loan Term (in months)', 'elementor-emi-calculator' ),
                'type' => \Elementor\Controls_Manager::NUMBER,
                'default' => __( '36', 'elementor-emi-calculator' ),
            ]
        );

        $this->end_controls_section();
    }

    protected function render() {
        $settings = $this->get_settings_for_display();
    $loan_amount = $settings['loan_amount'];
    $interest_rate = $settings['interest_rate'];
    $loan_term = $settings['loan_term'];

    // render the EMI calculator form
    echo '<form>';
    echo '<label>Loan Amount:</label>';
    echo '<input type="text" id="loanAmount" value="'.$loan_amount.'">';
    echo '<br>';
    echo '<label>Interest Rate:</label>';
    echo '<input type="text" id="interestRate" value="'.$interest_rate.'">';
    echo '<br>';
    echo '<label>Loan Term (in months):</label>';
    echo '<input type="text" id="loanTerm" value="'.$loan_term.'">';
    echo '<br>';
    echo '<button type="button" onclick="calculateEMI()">Calculate EMI</button>';
    echo '<br>';
    echo '<label>EMI:</label>';
    echo '<span id="emiResult"></span>';
    echo '</form>';

    echo '<script type="text/javascript">
            function calculateEMI() {
                var loanAmount = document.getElementById("loanAmount").value;
                var interestRate = document.getElementById("interestRate").value;
                var loanTerm = document.getElementById("loanTerm").value;

                var interest = (interestRate/100) / 12;
                var emi = (loanAmount * interest * Math.pow(1 + interest, loanTerm)) / (Math.pow(1 + interest, loanTerm) - 1);
                document.getElementById("emiResult").innerHTML = emi.toFixed(2);
            }
          </script>';
}

This code defines a new Elementor widget named `Elementor_EMI_Calculator_Widget` which contains a form with inputs for the loan amount, interest rate, and loan term, a calculate button and an element to display the EMI. The JavaScript function `calculateEMI()` is also included to handle the EMI calculations, it uses the values entered by the user and the mathematical formula to calculate the EMI and show it in the “emiResult” span element. Once the plugin is activated it will show a new widget in the Elementor widget list ready to use in the pages. Please keep in mind, this is just a basic example of how to create an EMI calculator widget for Elementor, you may want to add more functionality, validation, error handling, and customization as per your requirement. Also, it’s important to keep in mind the compatibility and best practices when developing the plugin, and testing it before releasing it. Additionally, consider adding proper documentation to make it easy for the users to understand and use the plugin, also optimizing the performance.