我注意到在我的WordPress网站的源代码末尾有一个随机的JavaScript函数。
<script type="text/javascript">
(function() {
var request, b = document.body, c = \'className\', cs = \'customize-support\', rcs = new RegExp(\'(^|\\\\s+)(no-)?\'+cs+\'(\\\\s+|$)\');
request = true;
b[c] = b[c].replace( rcs, \' \' );
// The customizer requires postMessage and CORS (if the site is cross domain)
b[c] += ( window.postMessage && request ? \' \' : \' no-\' ) + cs;
}());
</script>
https://developer.wordpress.org/reference/functions/wp_customize_support_script/
有人知道这个脚本到底是做什么的吗？如果需要的话？