コンタクトフォーム7
<script src="https://ajaxzip3.github.io/ajaxzip3.js" charset="UTF-8"></script>
 
<p>郵便番号<br />
    [text zip1 3/3 id:zip1] - [text zip2 4/4 id:zip2] </p>
 
<p>都道府県<br />
    [text prefecture 80/ id:prefecture]</p>
 
<p>市区町村<br />
    [text city 80/ id:city] </p>
 
<p>町域大字・番地<br />
    [text street 80/ id:street] </p>
-------
function add_head_link() {
    echo '<script src="https://ajaxzip3.github.io/ajaxzip3.js" charset="UTF-8"></script>';
    echo "
    <script type=\"text/javascript\">
    jQuery(function($){
    $(\"#zip\").attr('onKeyUp', 'AjaxZip3.zip2addr(this,\'\',\'address\',\'address\');');
})";
    echo '</script>';
}
add_action('wp_head', 'add_head_link');
-------
function add_head_link() {
    echo '<script src="https://ajaxzip3.github.io/ajaxzip3.js" charset="UTF-8"></script>';
    echo "
    <script type=\"text/javascript\">
    jQuery(function($){
    $(\"#zip\").attr('onKeyUp', 'AjaxZip3.zip2addr(this,\'\',\'address\',\'address\');');
    $(\"#zip2\").attr('onKeyUp', 'AjaxZip3.zip2addr(\'zip1\',\'zip2\',\'prefecture\',\'city\',\'street\');');
});";
    echo '</script>';
}
add_action('wp_head', 'add_head_link');