<script language="javascript">
var aaa="<font ....> aaaa </font>"
alert(/<font.*?>(.*?)<\/font>/)
alert(aaa.replace(/<font.*?>(.*?)<\/font>/,"$1"))</script>
var aaa="<font ....> aaaa </font>"
alert(/<font.*?>(.*?)<\/font>/)
alert(aaa.replace(/<font.*?>(.*?)<\/font>/,"$1"))</script>
function fnFormat()
{
var regStr=document.getElementById("txtRegStr").value;
var regHeader=/(<)(.+?)(>)/g;
var regFooter=/(<)(\/)(.+?)(>)/g;
document.getElementById("txtResult").value=regStr.replace(regHeader,"").replace(regFooter,"");
}<form id="regForm">
<textarea id="txtRegStr" rows="10" cols="30"></textarea>
<input type="button" id="format" value="replace" onclick="fnFormat()">
<textarea id="txtResult" rows="10" cols="30"></textarea>
</form>
function getFontInnerText(instr)
{
var re = /<font[^>]*>([\s\S]*?)</font>/i;//这才是标准的表达式
if(re.test(instr))return RegExp.$1;
else return "";
}
alert(getFontInnerText("<font \n ....> 我\n要的</font>"));