Question

textarea如何获取JS变量值？

请教个问题：我把textarea的值经JS正则处理后存入数据库，取出时用JS正则处理一下，可如何才能把这个值传回textarea呢
<script language="javascript">
var str = <%=rs2("briefintro5")%>
var reg=new RegExp("<br>","g");
var reg1=new RegExp(" ","g");

str = str.replace(reg,"\r\n");
str = str.replace(reg1," ");

document.getElementById("content").value=str;
</script>

<textarea name="content" cols="100" rows="18" class="wenbenkuang" id="content" </textarea>

Answer 1

js 获取、设置textarea的值

<textarea id="txta">test</textarea>

<script type="text/javascript">

var txt;

txt = document.getElementById('txta').value; //获取textarea的值

document.write (txt);
document.getElementById('txta').value = "txt2"; //设置textarea的值

</script>

Answer 2

//这样试试
<textarea name="content" cols="100" rows="18" class="wenbenkuang" id="content" </textarea>
<script language="javascript">
var str = '<%=rs2("briefintro5")%>';
var reg=new RegExp("<br>","g");
var reg1=new RegExp(" ","g");
str = str.replace(reg,"\r\n");
str = str.replace(reg1," ");
document.getElementById("content").value=str;
</script>

追问

还是不行，我感觉JS代码没有被执行，把var str = '';换成var str = 555，TEXTAREA还是得不到值

追答

TEXTAREA 放在js代码的上面了吗？

追问

哦，搞定了，是不小心把getElementById，写成了getElementByID,多谢了

追答

采纳啊/ 呵呵