一些常用的JavaScript

注册界面(添加界面)：

<script type="text/javascript">
function save(){
	if (!yanzheng()) {
		return false;
    }
	document.form1.action = "1 ";			
	document.form1.submit();
}
function back() {
	window.location.href = " 2";
}
function yanzheng() {
	if(document.getElementById(" 3").value.trim() == '') {
		window.alert("4");
		return false;
	}
						
	return true;
}
</script>