JSFiddle - React, Tailwind, and code Playground

by Lucaskazama

HTML

<select id="form">
   <option value="1">Plano 1</option>
   <option value="2">Plano 2</option>
   <option value="3">Plano 3</option>
</select>

<a href="#?plano=1#form">Plano 1</a>

JavaScript

var getUrlParameter = function getUrlParameter(sParam) {
    var sPageURL = window.location.search.substring(1),
        sURLVariables = sPageURL.split('&'),
        sParameterName,
        i;

    for (i = 0; i < sURLVariables.length; i++) {
        sParameterName = sURLVariables[i].split('=');

        if (sParameterName[0] === sParam) {
            return typeof sParameterName[1] === undefined ? true : decodeURIComponent(sParameterName[1]);
        }
    }
    return false;
};