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JavaScript - Using A String As A Pointer To An Array?
So i've written up the code to do a lightbox esque overlay image gallery. everything is working smooth and fine. The only concern is that I have the following:
lets say that I have a page that has multiple galleries. Obviously I would have to make each literal array with the gallery data different names, ex: Code: var _gallery1 = {
'images': [
{ 'id' : 1, 'src' : "" }
]
}
var _gallery2 = {
'images': [
{ 'id' : 1, 'src' : "" }
]
}
or would it be easier to do it multi dimensional? Code: var gallery_data = {
'gallery1': [
'images': [
{ 'id' : 1, 'src' : "" }
]
]
'gallery2': [
'images': [
{ 'id' : 1, 'src' : "" }
]
]
}
regardless of which direction I use... my main question is this: I have two variables which are the following: Code: galVariable = (i = location.hash.match(/#set=(.+)&photo=(\d+)/)) ? i[1] : null; galArray = _gallery2.images; I'm unfamiliar with a way of doing something along the lines of this, and having it actually work: Code: galVariable = (i = location.hash.match(/#set=(.+)&photo=(\d+)/)) ? i[1] : null; galArray = galVariable.images; obviously "galVariable" would be undefined... as i'm trying to get "_gallery2.images" but trying to use "galVariable" to point to "_gallery2" I'm familiar with solving a problem like this in PHP, not so much javascript. is there a JS function that can be used to ensure that it's using whatever "galVariable" equals to, and then that array's content is? Or is there a different way to go on about this. thanks in advance. if anyone needs some more clarification. please feel free to ask, and I'll respond asap. Similar TutorialsHi frds , I have requirement that when ever I hover the mouse on image then the mouse pointer should be hand symbol , So for that I have written the code as <a style="cursor: hand;"> <img ....?</a> in IE it works fine but in Firefox it doesnot works Note : I have already used as <a href="#"> <img ....></a> but due to this , the screen is jumping when we click on image Thanks Raj Hi, I'm pretty new to javascript and ajax and need some help. I want to create a form that has an advanced search page which changes the search fields that appear, depending on what the user clicks. For example, at the top there are three buttons: 1. Search images 2. Search videos 3. Search audio As a user clicks these I want different search fields to be shown on the page. I have tried searching for a way to do this via Google, with no luck. Can someone point me in the correct direction (via a demo or tutorial) on how to do this? I don't just want the answer as I really want to learn how to get this to work! Thanks I've wanted to add a hint pointer on my form but it is clearly not working as proposed... Javascript: Code: <style type="text/css">
/* All form elements are within the definition list for this example */
dl {
font:normal 12px/15px Arial;
position: relative;
width: 350px;
}
dt {
clear: both;
float:left;
width: 130px;
padding: 4px 0 2px 0;
text-align: left;
}
dd {
float: left;
width: 200px;
margin: 0 0 8px 0;
padding-left: 6px;
}
/* The hint to Hide and Show */
.hint {
display: none;
position: absolute;
right: -250px;
width: 200px;
margin-top: -4px;
border: 1px solid #c93;
padding: 10px 12px;
/* to fix IE6, I can't just declare a background-color,
I must do a bg image, too! So I'm duplicating the pointer.gif
image, and positioning it so that it doesn't show up
within the box */
background: #ffc url(pointer.gif) no-repeat -10px 5px;
}
/* The pointer image is hadded by using another span */
.hint .hint-pointer {
position: absolute;
left: -10px;
top: 5px;
width: 10px;
height: 19px;
background: url(pointer.gif) left top no-repeat;
}
</style>
<script type="text/javascript">
function addLoadEvent(func) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = func;
} else {
window.onload = function() {
oldonload();
func();
}
}
}
function prepareInputsForHints() {
var inputs = document.getElementsByTagName("input");
for (var i=0; i<inputs.length; i++){
// test to see if the hint span exists first
if (inputs[i].parentNode.getElementsByTagName("span")[0]) {
// the span exists! on focus, show the hint
inputs[i].onfocus = function () {
this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
}
// when the cursor moves away from the field, hide the hint
inputs[i].onblur = function () {
this.parentNode.getElementsByTagName("span")[0].style.display = "none";
}
}
}
// repeat the same tests as above for selects
var selects = document.getElementsByTagName("select");
for (var k=0; k<selects.length; k++){
if (selects[k].parentNode.getElementsByTagName("span")[0]) {
selects[k].onfocus = function () {
this.parentNode.getElementsByTagName("span")[0].style.display = "inline";
}
selects[k].onblur = function () {
this.parentNode.getElementsByTagName("span")[0].style.display = "none";
}
}
}
}
addLoadEvent(prepareInputsForHints);
</script>
HTML Code: <br><dl><dt><label><strong>Special requirements:</strong></label></dt> <br><dd><textarea name="special_requirements" cols="60" maxlength="300"></textarea> <span class="hint">e.g. Allergies, Disabilities, Parking, etc.<span class="hint-pointer"> </span></span> </dd></dl> Any help is appreciated, thanks! I am trying to redevelop firefox addon, to give it more funcionality. I found JS file where all the functions are and started to edit it. What I want to achieve is to get target of an anchor under mouse pointer (when mouse pointer is over anchor, I right click and call addon from context menu). For example when I have anchor which HTML code is: Code: <a href="somewehere.com/place">place</a> when I right click on this code and call my addon I would like to alert its href (somewehere.com/place) I wrote a function: Code: function ff()
{
var current_target=this.href;
alert(current_target);
}
but it gives me udefined on alert Any hints to achieve this are highly appreciated. Thanks I have an array: Code: var array_123=["test1","test2","test3"]; I have a string: Code: var array_string = "array_" + "123"; I would like to use the value of array_string (array_123) as an array to parse out the values of it. But this isn't working: Code: for (var x in array_string)
{
var test_ary = array_string[x];
}
Any help? Hi, Am trying to change both, the background color and the mouse pointer to hand on the mouseover event. Am using this to change the background color: Code: onMouseover="this.bgColor='#55FF55'"onMouseout="this.bgColor='#AEFFAE'" How and i add the "change pointer to hand" on this as well? Thanks Hello, 1. I have the following script: function selectThis(id){ var locationstring = "process.php?value=" + id; ///// locationstring += "&bs=" + $('#bs_' + id).attr("selectedIndex"); locationstring += "&ad=" + $('#ad_' + id).attr("selectedIndex"); locationstring += "&ns=" + $('#ns_' + id).attr("selectedIndex"); locationstring += "&wt=" + $('#wt_' + id).attr("selectedIndex"); locationstring += "&in=" + $('#in_' + id).attr("selectedIndex"); document.location.href = locationstring; } With it I am getting a string with the value of the clicked button from an array and some other select field values that are listed in the same set of mysql results as the clicked button. BUTTON: <input name="button" type="button" onclick="selectThis('<? echo $rows['id']; ?>');" value=""> At the end of the script the page is redirected to in the script mentioned page with following string: process.php?value=1&bs=2&ad=3&ns=4&wt=5&in=6 (values are not real, so whatever the chosen value of the select field should apear in the link.) THIS WORKS FINE. 2. My problem is following: In order to be able to use var locationstring in other scripts as well I have removed var and have made it global. function selectThis(id){ locationstring = "process.php?value=" + id; ///// locationstring += "&bs=" + $('#bs_' + id).attr("selectedIndex"); locationstring += "&ad=" + $('#ad_' + id).attr("selectedIndex"); locationstring += "&ns=" + $('#ns_' + id).attr("selectedIndex"); locationstring += "&wt=" + $('#wt_' + id).attr("selectedIndex"); locationstring += "&in=" + $('#in_' + id).attr("selectedIndex"); } The problem is that later on when I use locationstring variable in other script I get only first variable in the string process.php?value=1 instead of process.php?value=1&bs=2&ad=3&ns=4&wt=5&in=6 3. Is it possible to make locationstring variable global and in a single line in order to be able to use the full string in other scripts or is there another solution. Thank in advance. I have var att=7,8,9 how can I convert these to an array so I can loop through the values? Hello everybody ! I'm searching for a javascript function that convert array to query string. Like this example : Code: var array = { a=1, b=2, c=3 };
to
a=1&b=2&c=3
I'm using jQuery and the function .serialize() convert only html forms. Does someone know a function to do this ? Thanks ! Hi, I am trying to search an array for a string and then if it is found alert it. I have found examples of how to iterate the array and how to use .IndexOf to return a true false statement as to whether the array includes the string, but i don't know what to do after that and how to display the string if its found. Any help appreciated.. Thanks Hey. I have a string and I can return say, the fourth letter with output[3], but i can't assign a value to it for some reason: I am trying to make hang man Code: <!DOCTYPE html>
<html>
<head>
<script src="jquery.min.js"></script>
<script>
$(document).ready(function(){
var word, output, wordLength, stringLength, newLetter, letters;
var i, n, k, health, wcheck;
word = "word";
output = "";
letters = "";
wordLength = word.length;
for(i = 0; i < wordLength; i++){
output += "_";
}
$("#inputLetters").keyup(function(){
newLetter = $("#inputLetters").val();
$("#inputLetters").val("");
letters += newLetter;
wcheck = false;
for(i = 0; i < wordLength; i++){
if(word[i] == newLetter){
wcheck = true;
output[i] = newLetter;
}
}
if(wcheck = false){
health++;
}
$("#letters").html(output + "<br />" + letters);
});
});
</script>
</head>
<body>
<span id="letters">
</span>
<br />
<br />
<input id="inputLetters" type="text" />
</body>
</html>
Hello. I need help PLEASE ! I need to convert a string Quote: lalaw|lalaw1|lalaw2|lalaw3 in to Array The values I have in variable "tables" I want to create variable list which takes values from "tables" Than I want to split this, and put each value in to new array: I've started with: Code: var list = "tables";
var listArray = list.split("|");
for(i=0; i < listArray.length;i++)
{
//? how to put now values in to array?
}
Best Regards Leos Hi all, Forgive my ignorance, I'm quite new to Javascript... I'm looking to do two things: the first is to move elements of an array to the next index using a function. I have managed to do this like so: Code: var letters = ['h','i','j','k'];
function moveElements(anArray){
var newArray = anArray;
newArray.unshift(newArray[newArray.length-1]);
newArray.pop();
}
moveElements(letters);
(this may or not be great, but it seemed to work) ... but I want the original array to reset to its original state if the function is called again (thus producing the same answer as opposed to shifting the elements again). Secondly, and this is the bit I'm really struggling with: I want to compare each letter of a string to elements within an array and display the indices. For instance: Code: var myArray = ['a', 'b', 'c', 'd', 'e', 'f']; var text = 'dead'; Hence I want the result '3,4,0,3'. I know the answer will use for and if statements but I can't wrap my head around it at all. Help would be appreciated, thank you. Hello All, I have a string array in a class file that contains 5 values, which I need to display on the jsp page. but when I send it to the javascript it prints [Ljava.lang.String;@104f8b8 . what do i do about it. I am a new to javascript. Is there a way to get my array data from the response object. Please help. Hey all, I have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function: Code: <body> <select> <option value="createMsg">Add Message</option> <option value="removeMsg">Remove Message</option> </select> </body> Code: var menu = {
handleMenu : function(callback){
if(callback === "string"){
menu[callback]();
}
else {
console.log("Issue occurred")
}
},
createMsg : function(){
var content = document.createTextNode("Please give additional information."),
heading = document.createElement("h1");
heading.appendChild(content);
document.body.appendChild(heading);
},
removeMsg : function(){
}
}
document.getElementsByTagName('select')[0].onchange = function(){ menu.handleMenu(this.value)};
callback should be a string so why is it saying otherwise? Thanks for response I am working on a page where the user will select a location from a dynamically generated dropdown list. I was able to create the php multidimensional array (tested and working) from a MySql database using the users information at login, but I'm having problems converting it to a javascript multidimensional array. I need to be able to access variables that I can pass to a number of text fields within an html form. For instance, if a user belongs to a company with multiple addresses, I need to be able to let them select the address they need to prepopulate specific text fields. php array creation: Code: if ($row_locations)
{
while ($row_locations = mysql_fetch_assoc($locations))
{
$mail[$row_locations['comp_id']]=array('mailto'=>$row_locations['mailto'], 'madd'=>$row_locations['madd'], 'madd2'=>$row_locations['madd2'], 'mcity'=>$row_locations['mcity'], 'mstate'=>$row_locations['mstate'], 'mzip'=>$row_locations['mzip'], 'billto'=>$row_locations['billto'], 'badd'=>$row_locations['badd'], 'badd2'=>$row_locations['badd2'], 'bcity'=>$row_locations['bcity'], 'bstate'=>$row_locations['bstate'], 'bzip'=>$row_locations['bzip']);
}
}
javascript function - this should create the array and send variables to text fields. Code: function updateAddress() {
var mail = $.parseJSON(<?php print json_encode(json_encode($mail)); ?>);
{
if (comp_id in mail) {
document.getElementById('mailto').value=mail.comp_id.mailto.value;
document.getElementById('madd').value=mail.comp_id.madd.value;
document.getElementById('madd2').value=mail.comp_id.madd2.value;
document.getElementById('mcity').value=mail.comp_id.mcity.value;
document.getElementById('mstate').value=mail.comp_id.mstate.value;
document.getElementById('mzip').value=mail.comp_id.mzip.value;
} else {
document.getElementById('mailto').value='';
document.getElementById('madd').value='';
document.getElementById('madd2').value='';
document.getElementById('mcity').value='';
document.getElementById('mstate').value='';
document.getElementById('mzip').value='';
}
}
}
Where is this breaking? Thanks in advance. I can't seem to figure out how to accomplish this. In my website, I would like the user to input text into a single or multiple textbox(es) and then have the contents of the textbox(es) stored to either a variable or an array. Then I would like to have that variable/array compared to other arrays. Basically, the user is searching for items in a database. The user can search for as many or as little items as they want. Then the item(s) will be compared to multiple arrays to find out if what the user wants is in the database. So for example, let's say the user is searching for recipes that have all or part of these ingredients: chicken, broccoli, lemon, honey. So, there would have been a total of 4 textboxes...one for each ingredient. These ingredients are stored to an array..lets call it ingredient(). In the database of recipes, each recipe has its own array which includes the ingredients needed to make the recipe, we'll call them tag1(), tag2(), and tag3(). Now, I want the array, ingredient(), to be compared to each of the "tag" arrays to see if any of the "tag" arrays include exactly match the ingredient() tag in part or in whole. Is this possible? Hey guys, I'm hoping this is possible or that there is an easier way to do this. I'm having an issue with displaying data from one array that contains information about users in a table that is controlled by a different array. Is it possible to do this or is this use of arrays to display the data the wrong approach? The table is located on one webpage, I simply want to extract one piece of information that I have placed in the initial array as part of the login script that contains user information (for validation for login etc) and display it in a table on the new webpage that is opened as a result of successful validation of the user details. I'm completely stumped and after many attempts I just can't seem to get it to work. I have the following array that contain the people who are on off on certain time: Code: var all = [
["1234", "Jim", "2011-10-23 00:00:00", "2011-10-25 07:00:00"],
["1235", "Jack", "2011-10-21 00:00:00", "2011-10-21 08:00:00"],
["1236", "Jane", "2011-10-11 00:00:00", "2011-10-11 00:30:00"],
["1237", "June", "2011-10-20 00:00:00", "2011-10-20 12:00:00"],
["1238", "Jill", "2011-10-14 00:00:00", "2011-10-14 11:00:00"],
["1239", "John", "2011-10-16 00:00:00", "2011-10-16 10:30:00"],
["1240", "Jacab", "2011-10-19 00:00:00", "2011-10-20 08:30:00"]
];
The above array, I wish to use javascript to insert into the FullCalendar (http://arshaw.com/fullcalendar/). I notice that the only way seems to be using the FullCalendar array style (or structure) as follows: Code: $('#calendar').fullCalendar({
events: [
{
title : 'event1',
start : '2010-01-01'
},
{
title : 'event2',
start : '2010-01-05',
end : '2010-01-07'
},
{
title : 'event3',
start : '2010-01-09 12:30:00',
allDay : false // will make the time show
}
]
});
So, the question is: How do I insert my array to match with the FullCalendar array? cause FullCalendar array had a different array structure from my array - and I don't think so that I can write in this way: Code: $('#calendar').fullCalendar({
events:all
});
Appreciate any help provided. |
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