<script>
window.onload = function () {
form2.group.value = form2.select2.options[form2.select2.selectedIndex].value;
};
</script>
window.onload = function () {
form2.group.value = form2.select2.options[form2.select2.selectedIndex].value;
};
</script>
window.onload = function () {
form2.group.value = form2.select2.value;
};
</script>
这样看看呢