JavaScript - Load/save Textarea

Hi, I am a beginner to javascript , I wish to learn how to create a .txt in local machine and store the data input in the textarea with the current data & time updated too. I am wondering is it possible to do so ?

Please provide me a website or tutorial that I can learn about this. I tried to search it over the net but I just can't find a suitable tutorial for beginners like me. Thanks for the help. I appreaciate a lot.

If I have post this thread in a wrong section, please kindly move it to a correct section as I can't find the suitable section to ask about this.

Hey, I'm trying to make a game, I learned how to do so by reading tutorials but the problem is that I do not know how to implement the save/load function into the game, the tutorial surrounding that area was very unclear to me, and here I am...
Any tips on how to make this work is greatly appreciated, I wouldn't asked if I hadn't tried my best and every way I could think of. I'm still quite new to coding so...

The first piece of code is the game, the second one is what I'm trying to make the game work with.
I tried for a while and got the game to reset back to values, but only the values I set in the code so it never actually worked.
The tutorial doesn't give any live examples and I really am... not that bright when it comes to coding

Sorry and thanks, all inputs are appreciated.

I read tutorial from links below,
Javascript String Compression | Almost Idle Tutorial for save code
Incremental Lesson 9 - For Loops | Almost Idle Tutorial for the game code

Code:

/*Pleae refer to Lesson 9.txt for a full description on this lesson*/

//The timer to run code every second
var Timer = window.setInterval(function(){Tick()}, 1000);
var buildings = [];

//The object declaration for game saves
function GameSave() {
	this.money = 0;
	this.buildings = [];
	for (var i = 0;i < buildings.length;i++) {
		this.buildings[i] = 0;
	}
}

//The object declaration for buildings
function Building() {
	this.Name = "Lemonade Stand";
	this.Cost = 10;
	this.PerSec = 1;
}

//The function to initialise all buildings
function InitBuildings() {
	LoadBuilding("Lemonade Stand",10,1);
}

//The function to automatically load a building into the buildings array
function LoadBuilding(name,cost,persec) {
	var cur = buildings.length;
	
	buildings[cur] = new Building();
	buildings[cur].Name = name;
	buildings[cur].Cost = cost;
	buildings[cur].PerSec = persec;
}

//The function used to gather money
function GatherMoney() {
	game.money++; //++ tells javascript to add 1 to the variable
	
	//Display the player's current money
	document.getElementById("money").innerHTML = game.money;
}

//The function that gets run every second
function Tick() {
	for (var i = 0;i < buildings.length;i++) {
		game.money += game.buildings[i] * buildings[i].PerSec;
	}
	document.getElementById("money").innerHTML = game.money;
}

//The function to buy a lemonade stand
function Build(id) {
	if (game.money >= buildings[id].Cost) { //Check if the player has enough money, then subtract it and add a new building if they do
		game.money -= buildings[id].Cost;
		game.buildings[id] = game.buildings[id] + 1;
		document.getElementById("money").innerHTML = game.money;
		document.getElementById("Building1Qty").innerHTML = game.buildings[id];
	}
}

//Run this code once the page has loaded fully
window.onload = function() {
	InitBuildings();
	window.game = new GameSave();
};

Code:

/*Pleae refer to Compression.txt for a full description on this lesson*/

function NewGame() {
	this.name = "Our Game";
	this.description = "Our Game's Description";
	this.numbers = [];
	for (var i=0;i<10;i++) {
		this.numbers[i] = i;
	}
}

var Game = new NewGame();

window.onload = function() {
	var SaveGame = JSON.stringify(Game);
	SaveGame = encode_utf8(SaveGame);
	SaveGame = lzw_encode(SaveGame);
	window.localStorage['SaveName'] = SaveGame;
	
	
	SaveGame = window.localStorage['SaveName'];
	SaveGame = lzw_decode(SaveGame);
	SaveGame = decode_utf8(SaveGame);
	window.GameTwo = JSON.parse(SaveGame);
	
	document.getElementById("name").innerHTML = "Name: " + GameTwo.name;
	document.getElementById("desc").innerHTML = "Description: " + GameTwo.description;
	var numbers = "";
	for (var i=0;i<10;i++) {
		if (numbers.length == 0) {numbers = i;} else {numbers += ", " + i;}
	}
	document.getElementById("numbers").innerHTML = "Numbers: " + numbers;
}

// LZW-compress a string
function lzw_encode(s) {
    var dict = {};
    var data = (s + "").split("");
    var out = [];
    var currChar;
    var phrase = data[0];
    var code = 256;
    for (var i=1; i<data.length; i++) {
        currChar=data[i];
        if (dict['_' + phrase + currChar] != null) {
            phrase += currChar;
        }
        else {
            out.push(phrase.length > 1 ? dict['_'+phrase] : phrase.charCodeAt(0));
            dict['_' + phrase + currChar] = code;
            code++;
            phrase=currChar;
        }
    }
    out.push(phrase.length > 1 ? dict['_'+phrase] : phrase.charCodeAt(0));
    for (var i=0; i<out.length; i++) {
        out[i] = String.fromCharCode(out[i]);
    }
    return out.join("");
}

// Decompress an LZW-encoded string
function lzw_decode(s) {
    var dict = {};
    var data = (s + "").split("");
    var currChar = data[0];
    var oldPhrase = currChar;
    var out = [currChar];
    var code = 256;
    var phrase;
    for (var i=1; i<data.length; i++) {
        var currCode = data[i].charCodeAt(0);
        if (currCode < 256) {
            phrase = data[i];
        }
        else {
           phrase = dict['_'+currCode] ? dict['_'+currCode] : (oldPhrase + currChar);
        }
        out.push(phrase);
        currChar = phrase.charAt(0);
        dict['_'+code] = oldPhrase + currChar;
        code++;
        oldPhrase = phrase;
    }
    return out.join("");
}

function encode_utf8(s) {
  return unescape(encodeURIComponent(s));
}

function decode_utf8(s) {
  return decodeURIComponent(escape(s));
}

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01-16-2015, 05:52 PM #2
Dormilich View Profile View Forum Posts

Senior Coder Join Date Jan 2010 Location Behind the Wall Posts 3,532 Thanks 13 Thanked 372 Times in 368 Posts


the problem is that I do not know how to implement the save/load function into the game


save it where? that particular question is important as JavaScript has only limited places where it can save something at all.

1) save it on the server => call a server script with the appropriate data (e.g. via AJAX)
2) cookies, very limited storage space, only works on the same browser
3) WebStorage, more space than cookies, but still only the same browser
4) IndexedDB (same as above)

hi guys,

i am using this script (jquery) to resize textareas when a user enters text. it works well.

in the management system im writing i would like to also resize all textareas so that all text is visible when forms load

i.e. a user loads a form with textareas on and all the text is visible when they read the contents

Code:

/*
 * jQuery autoResize (textarea auto-resizer)
 * @copyright James Padolsey http://james.padolsey.com
 * @version 1.04
 */

(function($){
    
    $.fn.autoResize = function(options) {
        
        // Just some abstracted details,
        // to make plugin users happy:
        var settings = $.extend({
            onResize : function(){},
            animate : true,
            animateDuration : 150,
            animateCallback : function(){},
            extraSpace : 20,
            limit: 1000
        }, options);
        
        // Only textarea's auto-resize:
        this.filter('textarea').each(function(){
            
                // Get rid of scrollbars and disable WebKit resizing:
            var textarea = $(this).css({resize:'none','overflow-y':'hidden'}),
            
                // Cache original height, for use later:
                origHeight = textarea.height(),
                
                // Need clone of textarea, hidden off screen:
                clone = (function(){
                    
                    // Properties which may effect space taken up by chracters:
                    var props = ['height','width','lineHeight','textDecoration','letterSpacing'],
                        propOb = {};
                        
                    // Create object of styles to apply:
                    $.each(props, function(i, prop){
                        propOb[prop] = textarea.css(prop);
                    });
                    
                    // Clone the actual textarea removing unique properties
                    // and insert before original textarea:
                    return textarea.clone().removeAttr('id').removeAttr('name').css({
                        position: 'absolute',
                        top: 0,
                        left: -9999
                    }).css(propOb).attr('tabIndex','-1').insertBefore(textarea);
					
                })(),
                lastScrollTop = null,
                updateSize = function() {
					
                    // Prepare the clone:
                    clone.height(0).val($(this).val()).scrollTop(10000);
					
                    // Find the height of text:
                    var scrollTop = Math.max(clone.scrollTop(), origHeight) + settings.extraSpace,
                        toChange = $(this).add(clone);
						
                    // Don't do anything if scrollTip hasen't changed:
                    if (lastScrollTop === scrollTop) { return; }
                    lastScrollTop = scrollTop;
					
                    // Check for limit:
                    if ( scrollTop >= settings.limit ) {
                        $(this).css('overflow-y','');
                        return;
                    }
                    // Fire off callback:
                    settings.onResize.call(this);
					
                    // Either animate or directly apply height:
                    settings.animate && textarea.css('display') === 'block' ?
                        toChange.stop().animate({height:scrollTop}, settings.animateDuration, settings.animateCallback)
                        : toChange.height(scrollTop);
                };
            
            // Bind namespaced handlers to appropriate events:
            textarea
                .unbind('.dynSiz')
                .bind('keyup.dynSiz', updateSize)
                .bind('keydown.dynSiz', updateSize)
                .bind('change.dynSiz', updateSize);
            
        });
        
        // Chain:
        return this;
        
    };
    
    
    
})(jQuery);

many thanks for any help

Hi all

Is there a way to get the image(s) to load into the table after the page has loaded instead of the way I have it now?

I have 4 tabs, but I would like the imgs in tabs 2,3,4 to load after page load.

Example of how the tabs look.

Code:

    	  <div class="tabbertab">
            <h2>Australia_____</h2>
                      <table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFCC">
                       <caption class="highlight_Red">澳洲&nbsp; Australia
                       </caption>
  <tr>
    <td><a href="pages/promotion.html#aus_ACE" rel="nofollow" target="_blank"><img src="pages/images/Pics/AUS/ace.jpg" alt="ACE / ATTC" width="110" height="69" border="0" align="left" class="ozimg_L"/> ...a few more images etc

the other tabs look the same.

LT

This script displays a link to a registration/login form that loads in a light box for Joomla.
I've been goin nuts trying to figure out how to get this to load on page load with a delay.
Anyone know how to get this done?
PHP Code:
<?php
JHTML::_('behavior.mootools');
$document = JFactory::getDocument();
$document->addStyleSheet(JURI::base() . 'media/system/css/modal.css');
$document->addScript(JURI::base() . 'media/system/js/modal.js');
$document->addScriptDeclaration("window.addEvent('domready', function() {SqueezeBox.initialize({});});");
$user = & JFactory::getUser();

$uri = JFactory::getURI();
$url = $uri->toString();
$return = base64_encode($url);

?>
<div id="lbframeid" style="position:absolute;top:1px;left:1px;height:0px;width:0px;overflow:hidden">
<a href="http://www.wowjoomla.com/"><h1>Joomla Login LightBox powered by WowJoomla.com</h1> </a>
</div>
<?php if ($user->get('guest')) :?>
   <a href="<?php echo JRoute::_('index.php?option=com_loginbox')?>" 
      onclick="SqueezeBox.fromElement(this); return false;"  
      rel="{handler: 'iframe', size: {x: 660, y: 500}}"><?php echo JText::_('SIGNUP_LOGIN')?></a>
   <?php else: ?>
<?php echo JText::sprintf( 'HINAME', $user->get('name') ); ?>
<br>
   <a href="javascript:void(0);" onclick="LB_onLogout(); return false;"><?php echo JText::_('LOGOUT')?></a>
<?php endif; ?>
<script type="text/javascript">
function LB_onLogout() {
   var form = new Element('form');
   form.setProperty('method', 'POST');
   form.setProperty('target', '_self');
   form.setProperty('action', 'index.php');
   
   var input = new Element('input');
   input.setProperty('type', 'hidden');
   input.setProperty('name', 'option');
   input.setProperty('value', 'com_user');
   form.appendChild(input);
   
   var input = new Element('input');
   input.setProperty('type', 'hidden');
   input.setProperty('name', 'task');
   input.setProperty('value', 'logout');
   form.appendChild(input);
   
   var input = new Element('input');
   input.setProperty('type', 'hidden');
   input.setProperty('name', 'return');
   input.setProperty('value', '<?php echo $return; ?>');
   form.appendChild(input);
   
   $E('body').appendChild(form);
   form.submit();
}
</script>