【www.bbyears.com--js教程】
添加到数据库的每条评论中的每个表情都是以特殊的字符表示的,比如"[face1]"代表一个笑脸的表情,"[face2]"代表伤心的表情。只是,当这条评论在显示之前,对评论中的所有表情的特殊字符用对应的图片替换就行了
代码如下
/**
*评论添加表情--在光标处插入表情字符(www.111cn.net)
*/
$content = isset($_POST["content"]) ? $_POST["content"]: "";
if(!empty($content))
{
for($i = 1; $i <= 13; $i++)
{
$content = str_replace("[face" .$i. "]","",$content); //将特殊字符替换为图片显示(也可用正则替换,不过据说正则效率不高)
}
echo "您输入的内容是:" . $content . "
";
}
?>
<script type="text/javascript">
//在光标处插入图片字符JS
function addExpression(myField, myValue)
{
myField = document.getElementById(myField);
//IE
if (document.selection)
{
myField.focus();
sel = document.selection.createRange();
myValue = "[face"+myValue+"]";
sel.text = myValue;
sel.select();
}
//MOZILLA
else if (myField.selectionStart || myField.selectionStart == "0")
{
var startPos = myField.selectionStart;
var endPos = myField.selectionEnd;
// save scrollTop before insert
var restoreTop = myField.scrollTop;
myValue = "[face"+myValue+"]";
myField.value = myField.value.substring(0, startPos) + myValue + myField.value.substring(endPos,myField.value.length);
if (restoreTop > 0)
{
// restore previous scrollTop
myField.scrollTop = restoreTop;
}
myField.focus();
myField.selectionStart = startPos + myValue.length;
myField.selectionEnd = startPos + myValue.length;
}
else
{
myField.value += myValue;
myField.focus();
}
}
</script>