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Thread: Need help Javascript not working..

  1. 05-30-2009, 03:06 PM #1
    ShadowIce
    ShadowIce is offline Junior Coders
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    Default Need help Javascript not working..

    Hello all =) I have been doing yet more research on cookies, and this time on css background positions.

    Now I have a small problem with 1 or 2 of the functions which i created.

    the problem is i either get an 'object expected' or a 'document.TheForm.favSelect is null or not an object' or 'document.TheForm.favSelect2 is null or not an object'. What i NEED for this code to do, is unless u select a background, an alert message is brought up and u cant basically change the position of the background UNLESS a background is there, and when both the background and position of background is selected, the div "news"'s background changes and BOTH select menus disappear, and both the image & the position of the background image are saved to 2 seperate cookies.

    Here is my code:

    Code:
    <body onload="loadall();">
<script type="text/javascript">
var backgroundImages =
[ "images/Crystal_clear_water_Yamma_Sam_Island.jpg",
"images/CrystalForest_Sky.jpg" ];
var backgroundNames =
[ "Default",
"Crystal Forest" ];
var backgroundPositions =
[ "top Left",
"top Center",
"top Right",
"Left",
"Center",
"Right",
"bottom Left",
"bottom Center",
"bottom Right" ];
var backgroundPositionnames =
[ "top Left",
"top Center",
"top Right",
"Left",
"Center",
"Right",
"bottom Left",
"bottom Center",
"bottom Right" ];

function loadOptions( into )
{
    for ( var b = 0; b < backgroundImages.length; ++b )
    {
        into.options[into.options.length] =
            new Option( backgroundNames[b], backgroundImages[b] );
    }
}

function loadpositionopt( into1 )
{
    for ( var c1 = 0; c1 < backgroundPositions.length; ++c1 )
    {
        into1.options[into1.options.length] =
            new Option( backgroundPositionnames[c1], backgroundPositions[c1] );
    }
}

function savepos(image){
    var favPos = image;
    if ( favPos == "" ) return;
    SetCookie("position", favPos, exp);
return favPos;
}

function saveImage()
{
//if the 2nd index is select and the 1st 1 is null or "" or 2nd index select and the 1st 1 is null or ""
if(document.TheForm.favSelect2.selectedIndex && GetCookie("image") == null || document.TheForm.favSelect2.selectedIndex && GetCookie("image") == ""){
alert('NO!');
document.TheForm.favSelect2.selectedIndex = 0;
}else{
if(document.TheForm.favSelect.selectedIndex){
getDivsBG(this.value);
saveImage();
}else if(document.TheForm.favSelect2.selectedIndex){
window.location.href=window.location.href;
setDiv(document.TheForm.favSelect2.selectedIndex,'repeat');
savepos();
}
}
}

function loadall(){
getDivBG("image");
setDiv("position","repeat");
loadoptions(document.TheForm.favSelect);
loadpositionopt(document.TheForm.favSelect2);
}

function saverep(rep){
    var favrep = rep;
    if ( favrep == "" ) return;
    SetCookie("repeat", favrep, exp);
return favrep;
}

var expDays = 365;
var exp = new Date();
var favImage = "";
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function GetCookie(name)
{
    var cookies = document.cookie.split(/; /g);
    var arg = name + "=";
    for ( var c = 0; c < cookies.length; ++c )
    {
        var ck = cookies[c];
        if ( ck.indexOf(arg) == 0 )
        {
            var temp = ck.split(/=/);
            return unescape(temp[1]);
        }
    }
    return "";
}

function SetCookie (name, value)
{
    var argv = SetCookie.arguments;
    var argc = SetCookie.arguments.length;
    var expires = (argc > 2) ? argv[2] : null;
    var path = (argc > 3) ? argv[3] : null;
    var domain = (argc > 4) ? argv[4] : null;
    var secure = (argc > 5) ? argv[5] : false;

    document.cookie = name + "=" + escape (value) +
            ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
            ((path == null) ? "" : ("; path=" + path)) +
            ((domain == null) ? "" : ("; domain=" + domain)) +
            ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name)
{
    var exp = new Date();
    exp.setTime (exp.getTime() - 1);
    var cval = GetCookie (name);
    document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function getBodyBG(cookie)
{
    document.body.style.backgroundImage="url('" + GetCookie(cookie) + "')";
}
function getDivsBG(pic)
{
    if ( pic != ""){
       document.getElementById("news").style.backgroundImage="url('" + pic + "')";
    }
}

function setDiv(cookie,cookie2){
document.getElementById("news").style.backgroundPosition=GetCookie(cookie);
document.getElementById("news").style.backgroundRepeat=GetCookie(cookie2);
}

function getDivBG(cookie)
{
       document.getElementById("news").style.backgroundImage="url('" + GetCookie(cookie) + "')";
}

function menu(){
alert(GetCookie("image"));
alert(GetCookie("position"));
if(GetCookie("image") == null || GetCookie("image") == ""){
document.write('<hr>\n'
+'<font size="2px">News Menu\n'
+'<form name="TheForm">\n'
+'<select name="favSelect" style="width: 25%; height: 10; border:3px solid #6666FF; font-family: Arial; text-transform: capitalize; color: #000000; background-color: #6666FF; font-size:10pt; font-weight:bold" onchange="getDivBG(this.value), saveImage();">\n'
+'        <option value="">--choose--</option>\n'
+'    </select>&nbsp;');
}
if(GetCookie("position") == null || GetCookie("position") == ""){
document.write('<select name="favSelect2" style="width: 25%; height: 10; border:3px solid #6666FF; font-family: Arial; text-transform: capitalize; color: #000000; background-color: #6666FF; font-size:10pt; font-weight:bold" onchange="loadpositionopt(this.value), savepos();">\n'
+'        <option value="">--choose--</option>\n'
+'    </select><br>\n'
+'</form></font>\n');
}
}

function getnews(newsbody){

checkxmlhttprequest();

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "myremotefile.txt", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText;
      lines = txtFile.responseText.split(/\r?\n/g); // Will separate each line into an array
       document.getElementById(newsbody).innerHTML = lines;
      } else {
       document.getElementById(newsbody).innerHTML = 'News file not found';
      }
    }
  }
 txtFile.send();

}

function gettitle(newstitle){

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "myremotetitle.ini", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText;
      lines = txtFile.responseText.split("\n"); // Will separate each line into an array
       document.getElementById(newstitle).innerHTML = lines;
      } else {
       document.getElementById(newstitle).innerHTML = 'News file not found';
      }
    }
  }
 txtFile.send();
}

function checkxmlhttprequest(){
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  } else {
  alert('Sorry, your browser doesn\'t support XMLHTTPRequests');
  return null;
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  } else {
  alert('Sorry, your browser doesn\'t support XMLHTTPRequests');
  return null;
  }
}
</script>

<Center><p align="Center">
<table border="1" style="background-Color: #44CFFC;" width="400" height="300" name="about"><tr><td valign="top">
<div id="news" style="height: 30%; background-Color: #44CF00;">
<script type="text/javascript">menu();</script>
</div><hr>
</table></td></tr>
</p></Center>
</body>
    ANY help is GREATLY appreciated!

    Thanks!

    ~SI~
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  2. 05-30-2009, 04:46 PM #2
    ShadowIce
    ShadowIce is offline Junior Coders
    Join Date
    Mar 2009
    Posts
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    Default

    Here's a fix, but I still get 'options.length is null or not an object', what is up w/ this?

    Code:
    <body onload="loadall();">
<script type="text/javascript">
var backgroundImages =
[ "images/Crystal_clear_water_Yamma_Sam_Island.jpg",
"images/CrystalForest_Sky.jpg" ];
var backgroundNames =
[ "Default",
"Crystal Forest" ];
var backgroundPositions =
[ "top Left",
"top Center",
"top Right",
"Left",
"Center",
"Right",
"bottom Left",
"bottom Center",
"bottom Right" ];
var backgroundPositionnames =
[ "top Left",
"top Center",
"top Right",
"Left",
"Center",
"Right",
"bottom Left",
"bottom Center",
"bottom Right" ];

function loadall(){
alert(GetCookie("image"));
alert(GetCookie("position"));
getDivBG("image");
loadOptions(document.TheForm.favSelect);
loadpositionopt(document.TheForm.favSelect2);
setDiv("position","repeat");
}

function loadOptions( into )
{
    for ( var b = 0; b < backgroundImages.length; ++b )
    {
        into.options[into.options.length] = 
            new Option( backgroundNames[b], backgroundImages[b] );
    }
}

function loadpositionopt( into1 )
{
    for ( var c1 = 0; c1 < backgroundPositions.length; ++c1 )
    {
        into1.options[into1.options.length] =
            new Option( backgroundPositionnames[c1], backgroundPositions[c1] );
    }
}

function savepos(){
    var favPos = document.forms.TheForm.favSelect2.value;
    if ( favPos == "" ) return;
    SetCookie("position", favPos, exp);
}

function saverep(rep){
    var favrep = rep;
    if ( favrep == "" ) return;
    SetCookie("repeat", favrep, exp);
return favrep;
}

var expDays = 365;
var exp = new Date(); 
var favImage = "";
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function setDiv(cookie,cookie2){
document.getElementById("news").style.backgroundPosition=GetCookie(cookie);
document.getElementById("news").style.backgroundRepeat=GetCookie(cookie2);
}

function saveImage()
{
    var favImage = document.forms.TheForm.favSelect.value;
    if ( favImage == "" ) return;
    SetCookie("image", favImage, exp);
    getDivBG("image");
}


function menu(){
document.write('<div id="mydiv" style="background-color: white; width: 120px; height: 120px;">\n'
+'</div>\n'
+'<form name="TheForm">\n'
+'<font size="2pt">News Menu | Change Background: <select name="favSelect" onchange="getDivsBG(this.value), saveImage();">\n'
+'        <option value="">--choose--</option>\n'
+'    </select></font>\n'
+'<select name="favSelect2" onchange="loadpositionopt(this.value), savepos();">\n'
+'        <option value="">--choose--</option>\n'
+'    </select>\n'
+'</form>\n'
+'');
}
     
var expDays = 365;
var exp = new Date(); 
var favImage = "";
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

function GetCookie(name)
{  
    var cookies = document.cookie.split(/; /g);
    var arg = name + "=";  
    for ( var c = 0; c < cookies.length; ++c )
    {
        var ck = cookies[c];
        if ( ck.indexOf(arg) == 0 )
        {
            var temp = ck.split(/=/);
            return unescape(temp[1]);
        }
    }
    return "";
}

function SetCookie (name, value) 
{  
    var argv = SetCookie.arguments;  
    var argc = SetCookie.arguments.length;  
    var expires = (argc > 2) ? argv[2] : null;  
    var path = (argc > 3) ? argv[3] : null;  
    var domain = (argc > 4) ? argv[4] : null;  
    var secure = (argc > 5) ? argv[5] : false;  

    document.cookie = name + "=" + escape (value) + 
            ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) + 
            ((path == null) ? "" : ("; path=" + path)) +  
            ((domain == null) ? "" : ("; domain=" + domain)) +    
            ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) 
{  
    var exp = new Date();  
    exp.setTime (exp.getTime() - 1);  
    var cval = GetCookie (name);  
    document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

function getBodyBG(cookie)
{
    document.body.style.backgroundImage="url('" + GetCookie(cookie) + "')";
}
function getDivsBG(pic)
{
    if ( pic != ""){
       document.getElementById("mydiv").style.backgroundImage="url('" + pic + "')";
       //document.getElementById("blahnews").style.backgroundImage="url('" + pic + "')";
    }
}

function getDivBG(cookie)
{
       document.getElementById("mydiv").style.backgroundImage="url('" + GetCookie(cookie) + "')";
       //document.getElementById("blahnews").style.backgroundImage="url('" + GetCookie(cookie) + "')";
}

function getnews(newsbody){

checkxmlhttprequest();

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "myremotefile.txt", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText;
      lines = txtFile.responseText.split(/\r?\n/g); // Will separate each line into an array
       document.getElementById(newsbody).innerHTML = lines;
      } else {
       document.getElementById(newsbody).innerHTML = 'News file not found';
      }
    }
  }
 txtFile.send();

}

function gettitle(newstitle){

var txtFile = new XMLHttpRequest();
txtFile.open("GET", "myremotetitle.ini", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText;
      lines = txtFile.responseText.split("\n"); // Will separate each line into an array
       document.getElementById(newstitle).innerHTML = lines;
      } else {
       document.getElementById(newstitle).innerHTML = 'News file not found';
      }
    }
  }
 txtFile.send();
}

function checkxmlhttprequest(){
if (window.XMLHttpRequest)
  {
  // code for IE7+, Firefox, Chrome, Opera, Safari
  return new XMLHttpRequest();
  } else {
  alert('Sorry, your browser doesn\'t support XMLHTTPRequests');
  return null;
  }
if (window.ActiveXObject)
  {
  // code for IE6, IE5
  return new ActiveXObject("Microsoft.XMLHTTP");
  } else {
  alert('Sorry, your browser doesn\'t support XMLHTTPRequests');
  return null;
  }
}
</script>

<Center><p align="Center">
<table border="1" style="background-Color: #44CFFC;" width="400" height="300" name="about"><tr><td valign="top">
<div id="news" style="height: 30%; background-Color: #44CF00;">
<script type="text/javascript">menu();</script>
</div><hr>
</table></td></tr>
</p></Center>
</body>
    ANY help is GREATLY appreciated!

    Thanks!

    ~SI~
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  3. 05-31-2009, 08:43 AM #3
    vwphillips
    vwphillips is offline Elite Coders
    Join Date
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    Portsmouth, UK
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    Default

    <select name="favSelect2" onchange="loadpositionopt(this); savepos();">
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  4. The Following User Says Thank You to vwphillips For This Useful Post:

    ShadowIce (06-02-2009)
  5. 06-02-2009, 11:57 PM #4
    ShadowIce
    ShadowIce is offline Junior Coders
    Join Date
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    THANK you!
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