变量:<INPUT TYPE="text" NAME="txt2" value="" onpropertychange=a()><br>
文本框<INPUT TYPE="text" NAME="txt1" value="">
<SCRIPT LANGUAGE="JavaScript">
<!--
function a(){
txt1.value=txt2.value;}
//-->
</SCRIPT>
文本框<INPUT TYPE="text" NAME="txt1" value="">
<SCRIPT LANGUAGE="JavaScript">
<!--
function a(){
txt1.value=txt2.value;}
//-->
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
<!--
function a(){
var text1="你好!"
document.f1.txt1.value=text1;}
//-->
</SCRIPT><form name="f1">
<INPUT TYPE="text" NAME="txt2" value="" onpropertychange=a()><br>
</form>
var varMessage="hello";
document.write("<input type='text' value='"+varMessage+"'>")
</script>=====<input type='text' id=a1 value=''>
<script>
var varMessage="hello";
a1.value=varMessage;
</script>=====<script>
var varMessage="hello";
</script>
<input type='text' id=a1 value='' style="benc:expression(this.value=varMessage)">