我只是想添加类"btn"到我的选择元素。所以select元素看起来像
<select class="btn">
在代码中添加类:
<form id="category-select" class="category-select" action="<?php echo esc_url( home_url( '/' ) ); ?>" method="get">
<?php
$args = array(
'show_option_none' => __( 'Select category' ),
'show_count' => 1,
'orderby' => 'name',
'echo' => 0,
);
?>
<?php $select = wp_dropdown_categories( $args ); ?>
<?php $replace = "<select$1 onchange='return this.form.submit()'>"; ?>
<?php $select = preg_replace( '#<select([^>]*)>#', $replace, $select ); ?>
<?php echo $select; ?>
<noscript>
<input type="submit" value="View" />
</noscript>
</form>
文档显示了您提供的参数中'class'的一个选项
$args = array(
'show_option_none' => __( 'Select category' ),
'show_count' => 1,
'orderby' => 'name',
'echo' => 0,
'class' => 'btn'
);
你也可以像这样使用jquery添加类:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"> </script>
<script>
$(document).ready(function(){
$("button").click(function(){
$("select").addClass("btn");
});
});