JSFiddle - React, Tailwind, and code Playground

HTML

<input type="checkbox" id="checkbox"> Checkbox 1

JavaScript

$(document).ready(function () {

		var valor_conjunto = '0,00';
    
    if (valor_conjunto == '0,00') {
      $('#checkbox').each(function() {
      	this.checked = true;               
      });
      
    } else {
    	$('#checkbox').each(function() {
      	this.checked = false;               
      });
    }
    
}