1：admin-ajax.php
前端页面：
<script type="text/javascript">
jQuery.ajax({
type: 'POST',
url: "<?php echo admin_url( 'admin-ajax.php' );?>",
data: {
action: 'myajax_submit'
},
success: function(res) {
console.log(JSON.stringify("--"+res));
}
});
</script>
后端functions.php里面接受请求：
add_action( 'wp_ajax_nopriv_myajax_submit', 'myajax_submit' );
add_action( 'wp_ajax_myajax_submit', 'myajax_submit' );
function myajax_submit() {
$response = json_encode( array( 'success' => true ) );
header( "Content-Type: application/json" );
echo $response;
// 这个很关键啊有木有: 别忘记 "exit"
exit;
}
注意：前端action名字要和后端wp_ajax_nopriv_XXX名字后缀对应起来
2.WP_Query()
get_query_var()
wp_reset_postdata()
