common.js

simesh用于WEB界面开发的一个架构. 这是学习他的一个小例子

//Show an alert window when deleting item.
function _delete(url,msg)
{
	var msg="真的要删除" + msg + "吗?";
	if(confirm(msg))
	{	
		location.href=url;
	}
	else
	{
		return false;
	}
}

//Select all items named elementName.
function selectAll(form,elementName)
{
	for (var i=0;i<form.elements.length;i++)
	{
    	var e = form.elements[i];
    	if (e.name==elementName)
    	{
    		e.checked = form.chkall.checked;
    	}
  	}
}

function isFormItemEmpty(thisForm,thisItem){
	if(thisForm==null || thisForm==""){
		return true;
	}	
	
	if(thisItem==null || thisItem==""){
		return true;
	}
	
	var _form = thisForm;
	
	for (var i=0;i<_form.elements.length;i++){
		var e = _form.elements[i];
		if(e.name == thisItem && e.value==""){
			e.focus();
			return true;
		}
	}
	return false;
}

function isNumeric(val)
{
	if(val==null || val.length==0)
		return false;

	for(i=0;i<val.length;i++){
		if(!isNumChar(val.substr(i,1)))
			return false;
	}
	return true;
}

function isNumChar(c){
	var n = "1234567890";
	for(j=0;j<n.length;j++){
		if(c==n.substr(j,1))
			return true;
	}
	return false;
}