comment_form() 函数说明地址（英文）：传送门
先看看原来的 Ctrl + Enter 提交评论代码（注意红色部分）：

<textarea name="comment" id="comment" cols="100%" rows="10" tabindex="4" onkeydown="if(event.ctrlKey&amp;&amp;event.keyCode==13){document.getElementById('submit').click();return false};"></textarea>

评论表情插入
继续折腾 WordPress3.0 表单生成函数 comment_form()，这次折腾的是评论表情，用了 comment_form() 后，对于一般评论表单的代码插入非常麻烦，得再折腾才能实现之。
willin 写的评论表情插入代码是很方便的，就一个 smiley.php 文件，但现在用 comment_form() 生成表单应该怎样插入调用代码呢？
一、改造 smiley.php，改造后的代码如下：

<script type="text/javascript" language="javascript">
/* <![CDATA[ */
    function grin(tag) {
    	var myField;
    	tag = ' ' + tag + ' ';
        if (document.getElementById('comment') && document.getElementById('comment').type == 'textarea') {
    		myField = document.getElementById('comment');
    	} else {
    		return false;
    	}
    	if (document.selection) {
    		myField.focus();
    		sel = document.selection.createRange();
    		sel.text = tag;
    		myField.focus();
    	}
    	else if (myField.selectionStart || myField.selectionStart == '0') {
    		var startPos = myField.selectionStart;
    		var endPos = myField.selectionEnd;
    		var cursorPos = endPos;
    		myField.value = myField.value.substring(0, startPos)
    					  + tag
    					  + myField.value.substring(endPos, myField.value.length);
    		cursorPos += tag.length;
    		myField.focus();
    		myField.selectionStart = cursorPos;
    		myField.selectionEnd = cursorPos;
    	}
    	else {
    		myField.value += tag;
    		myField.focus();
    	}
    }
/* ]]> */
</script>
<?php $smilies = '
<a href="javascript:grin(\':?:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_question.gif" alt="" /></a>
<a href="javascript:grin(\':razz:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_razz.gif" alt="" /></a>
<a href="javascript:grin(\':sad:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_sad.gif" alt="" /></a>
<a href="javascript:grin(\':evil:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_evil.gif" alt="" /></a>
<a href="javascript:grin(\':!:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_exclaim.gif" alt="" /></a>
<a href="javascript:grin(\':smile:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_smile.gif" alt="" /></a>
<a href="javascript:grin(\':oops:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_redface.gif" alt="" /></a>
<a href="javascript:grin(\':grin:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_biggrin.gif" alt="" /></a>
<a href="javascript:grin(\':eek:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_surprised.gif" alt="" /></a>
<a href="javascript:grin(\':shock:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_eek.gif" alt="" /></a>
<a href="javascript:grin(\':???:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_confused.gif" alt="" /></a>
<a href="javascript:grin(\':cool:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_cool.gif" alt="" /></a>
<a href="javascript:grin(\':lol:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_lol.gif" alt="" /></a>
<a href="javascript:grin(\':mad:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_mad.gif" alt="" /></a>
<a href="javascript:grin(\':twisted:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_twisted.gif" alt="" /></a>
<a href="javascript:grin(\':roll:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_rolleyes.gif" alt="" /></a>
<a href="javascript:grin(\':wink:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_wink.gif" alt="" /></a>
<a href="javascript:grin(\':idea:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_idea.gif" alt="" /></a>
<a href="javascript:grin(\':arrow:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_arrow.gif" alt="" /></a>
<a href="javascript:grin(\':neutral:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_neutral.gif" alt="" /></a>
<a href="javascript:grin(\':cry:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_cry.gif" alt="" /></a>
<a href="javascript:grin(\':mrgreen:\')"><img src="'.get_bloginfo("wpurl").'/wp-includes/images/smilies/icon_mrgreen.gif" alt="" /></a>
<br />'
?>

二、（comments.php）在上面加入调用 smiley.php

<?php include(TEMPLATEPATH . '/smiley.php');?>

三、修改上面说的加入 Ctrl + Enter 的 comment_form() 函数参数，变成如下：

<?php comment_form('comment_field=<p class="comment-form-comment"><textarea aria-required="true" rows="8" cols="45" name="comment" id="comment" onkeydown="if(event.ctrlKey){if(event.keyCode==13){document.getElementById(\'submit\').click();return false}};"></textarea></p><p>'.$smilies.'</p>'); ?>

O了...
转自http://zww.me/archives/25313