怎么拿到某个表单控件的对象,我指的对象是比如说js:
<input type="text" id="srchtxt" name="srchtxt" prompt="search_kw" size="45" maxlength="40" value="" class="txt" tabindex="1" />
var txtName=document.getElementById("srchtxt")
var value=txtName.value;
var name=txtName.name;
var class=txtName.class;