Could anyone help me with how I can change the information that is in blue in the image below, according to the selection of select (monthly, quarterly, semiannual and annual)?
I need to change the value of the product and the button
link:
ThecodeIhaveisthis:
<select class="select-ciclos" name="select" onchange="document.getElementById('selecionado').innerHTML = '' + this.value;">
<option value="<sup>R$</sup><span>9,99</span>/mês" selected="selected">Mensal</option>
<option value="<sup>R$</sup><span>28,77</span>">Trimestral -4%</option>
<option value="<sup>R$</sup><span>54,14</span>">Semestral -8%</option>
<option value="<sup>R$</sup><span>99,99</span>/ano">Anual -16%</option>
</select>
<div id="selecionado" class="price"><sup>R$</sup><span>9,99</span>/mês</div>