JSFiddle - React, Tailwind, and code Playground

HTML

<button type='button' data-button='{"option1": "option1", "option2": "option1"}'>click1</button>

JavaScript

$(function(){
    
    jQuery.fn.option1 = function () {
    
       var options = $.parseJSON($(this).attr('data-button'));
        
       alert(options.option1);
    
       return this;
    }
    
    var data='hello outside';
    
                
    $('button').click(function(){
        //var data='hello inside';
    
        $(this).option1();
    });


});