JSFiddle - React, Tailwind, and code Playground

by nikolya223

HTML

<div class="cont1" style="text-align: center;">
<div class="input-prepend"><span class="focus-example1">
<span id="donate_wm" class="add-on">WMR</span>
					<input id="wm-pay-1" class="wm-pay-1" type="number" name="LMI_PAYMENT_AMOUNT" size="3" min="0" max="100" step="10" value="10" title="Введите сумму"  />
</span></div>

<span class="focus-example">
		<select id="wm-pay-2" class="wm-pay-2" name="LMI_PAYEE_PURSE"  title="Выбор валюты" style="min-width:30px;">
		<optgroup label="Выбор">
					<option value="R">WMR			</option>
					<option value="Z">WMZ			</option>
					<option value="E">WME			</option>
					<option value="U">WMU			</option>
					<option value="B">WMB			</option>
					</optgroup>
		</select>
</span>

JavaScript

$("select").on("change",function () { 
      var  str =  $("#wm-pay-2 option:selected").text().trim();
          $("#donate_wm").text(str);
}).trigger('change');