没看明白
<script language="javascript">
function clickEvent()
{
document.form1.aa.value=document.form1.bb.value+document.form1.cc.value;
}
</script>??
<script language="javascript">
function clickEvent()
{
document.form1.aa.value=document.form1.bb.value+document.form1.cc.value;
}
</script>??
function dec()
{
document.form1.aa.value=document.form1.aa.value-document.form1.bb.value;
}function add()
{
var aa=document.form1.aa.value;
var cc=document.form1.cc.value;
document.form1.aa.value=parseInt(aa,0)+parseInt(cc,0);
}
</script><form name=form1>
<input type=text name=aa value=0>合计<br><br>
<input type=text name=bb>
<input type=button onclick="javascript:dec();" value="减少"><br>
<input type=text name=cc>
<input type=button onclick="javascript:add();" value="增加">
</form>