jQuery Plugin For Input Counter – jquery.input-counter.js
InputCounter is a simple but powerful jQuery plugin for a input counter. It is lightweight Bootstrap compatible jQuery input spinner plugin to increments and decrements numeric values with plus/minus buttons.

Libraries
Load the following jQuery and Plugins library on page.
HTML
The vary basic HTML to display input spinner.
JS
Call the plugin’s function to enable the input spinner.
$(".input-counter").inputCounter();
Use following option to customize input spinner.
var options = {
selectors: {
addButtonSelector: '.btn-add', // the selector for the add button
subtractButtonSelector: '.btn-subtract', // the selector for the subtract button
inputSelector: '.counter', // the selector for the -field
},
settings: {
checkValue: true, // if true, verifies that the new value is within the min and max values
isReadOnly: true, //^if true, set the input-field as readonly
},
};
See live demo and download source code.
DEMO | DOWNLOAD
This awesome plugin is developed by lk-code. Visit their official github repository for more information and follow for future updates.