<script src="https://ajaxzip3.github.io/ajaxzip3.js" charset="UTF-8"></script>
<p>郵便番号<br>
<input type="text" name="zip01" size="4" maxlength="3"> － <input type="text" name="zip02" size="5" maxlength="4" onKeyUp="AjaxZip3.zip2addr('zip01','zip02','pref01','addr01','strt01');"></p>
<p>都道府県<br>
<input type="text" name="pref01" size="40"><br>
市区町村<br>
<input type="text" name="addr01" size="40"> 
<input type="text" name="strt01" size="40"></p>