Form Memory Script

[kyern]

I am trying to customize this script so it can retain values of both selects and checkbox fields. I've already done a tiny change that will make it so textareas will work. The trouble I'm having is probably very basic. I can't figure out where the value is being assigned to the form field. I expected to see a loop with a .value being assigned from the scripts array however that isn't the case. Any insight would be wonderful.

I've went ahead and formatted this script correctly. This was a third party script so I had avoided making changes that I didn't have to. If this makes it easier for the previous commenter to read that is excellent. There is no external html, this is a modern javascript it is included in the header and just works.

Thanks

David

//Time in days to save form fields values after last visit
//Set to different value to reset cookie (ie: "101 days" instead of "100 days"):
var memoryduration="100 days";

function setformobjects() {

	var theforms=document.forms;
	memorizearray=new Array();
	for (i=0; i< theforms.length; i++) {
		for (j=0; j< theforms[i].elements.length; j++){
			if (theforms[i].elements[j].className.indexOf("memorize")!=-1) {
				memorizearray[memorizearray.length]=theforms[i].elements[j];
			}
		}
	}
			
	var retrievedvalues=get_cookie("mvalue"+window.location.pathname);
	
	if (retrievedvalues!="") {
		retrievedvalues=retrievedvalues.split("|");

		if (retrievedvalues[retrievedvalues.length-1]!=parseInt(memoryduration)) //reset cookie if var memoryduration has changed
			resetcookie("mvalue"+window.location.pathname);
		else{
			for (i=0; i<memorizearray.length; i++) {
				if (retrievedvalues[i]!="empty_value") {
					memorizearray[i].value=retrievedvalues[i];
				}
			}
		}
	}
	
}

function get_cookie(Name) {

	var search = Name + "=";
	var returnvalue = "";
	if (document.cookie.length > 0) {
		offset = document.cookie.indexOf(search);
		if (offset != -1) { // if cookie exists
			offset += search.length;
			end = document.cookie.indexOf(";", offset);
			if (end == -1) {
				end = document.cookie.length;
			}
		returnvalue=unescape(document.cookie.substring(offset, end));
		}
	}
	return returnvalue;
	
}

function resetcookie(id){
	
	var expireDate = new Date();
	expireDate.setDate(expireDate.getDate()-10);
	document.cookie = id+"=;path=/;expires=" + expireDate.toGMTString();
	
}

function saveformvalues(){
	
	var formvalues=new Array(), temp;
	for (i=0; i<memorizearray.length; i++) {
		temp=memorizearray[i].value!=""? memorizearray[i].value : "empty_value";
		formvalues[formvalues.length]=escape(temp);
	}
	
	formvalues[formvalues.length]=parseInt(memoryduration);
	formvalues=formvalues.join("|");
	var expireDate = new Date();
	expireDate.setDate(expireDate.getDate()+parseInt(memoryduration));
	document.cookie = "mvalue"+window.location.pathname+"="+formvalues+"; path=/;expires=" + expireDate.toGMTString();
	
}

if (window.addEventListener)
	window.addEventListener("load", setformobjects, false);
else if (window.attachEvent)
	window.attachEvent("onload", setformobjects);
else if (document.getElementById)
	window.onload=setformobjects;
if (document.getElementById)
	window.onunload=saveformvalues;

 

[rac2]

Here is where the form field values are set from the values retrieved from the cookie.

...
memorizearray[i].value = retrievedvalues[i];
...

memorizearray is an array of objects. The objects are the form fields. The form fields, called elements in the DOM, are assigned in this statement.

...
memorizearray[memorizearray.length]=theforms[i].elements[j];
...

In other words the expression

memorizearray.value

is another way of writing

theforms.elements[j].value

Except the subscripts do not correspond. The array memorizearray is one array including all fields in all forms. If you see what I mean.


HTH

 

[kyern]

Thank you! When the form fields are set into the array like that do they retain all their information? I need to check the type of filed like so memorizearray.type but it doesn't seem to work that way. Any suggestions?

Thanks again

David

 

[kyern]

Ignore the previous post, I have it completely working now. Thank you very much!

David