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JavaScript - Multidimensional Associative Array
Hi,
I am trying to save information to a multidimensional associative array, when a use inputs data about booking a restaurant table. So basically if he user changes his/her mind and cancels but wants to retrieve that information again at the same time they can do so. So for example the information would be like: - Code: Table 1 Customer Name Time Seats Table 2 Customer Name Time Seats etc. Now what I want to know is how do I implement this as a multi-associative array and how do I retrieve the values. Similar TutorialsHi, New to javascript here. I'm trying to do something that would be very easy to do in php, but is quite hard in javascrpit due to the lack of support of associative array. PHP Code: var myArray = new Array(); //a click event has been detected //var clickedElementId = get the clicked element id... myArray[clickedElementId ] = true; And if the element gets clicked again: PHP Code: if(isset(myArray[clickedElementId ])){ unset(myArray[clickedElementId ]); } I can use .push() to add clickedElementId as a value associated to a numeric key, but then how would you remove a specific element from the array? How would you approach such a typical algo in javascript? Regards, -jj. Something like this: ['level1key':['level2key:'value']] That is the value itself is any object. Hey, i am just trying to learn javascript and my friend gave me a little assignment to try and figure out. i am having trouble figuring it out and need some help. basically i just want to display the information in my associative array, into an html table. var NFC_east = new Array(); NFC_east[0]=["Giants", 16, 0, "Eli Manning"]; NFC_east[1]=["Cowboys", 0, 16, "Tony Romo"]; NFC_east[2]=["Redskins", 0, 16, "Donnovan McNabb"]; NFC_east[3]=["Eagles", 0, 16, "Mike Vick"]; that's my array. now i need to display that in a table with a Team column, wins column, loses column, and a quarterback column. i basically want to do this using a for loop, and he gave me a hint about using a nested while loop as well somehow. i know i need to use getElementById, id, and innerHTML stuff but i just don't know how to do it. i cant find anything to help me with this simple task, hoping someone here could help. I'm new to Javascript, and am having a bit of trouble figuring out some things... so hopefully this will be an easy one. I want a lookup table that matches url fragments to the name I want to show. For instance, if a url contains "yahoo.com", I want to print "Yahoo." For now, I created a multidimensional array that maps url fragments to a name. such as, Code: var urlMapping = [
{ urlpath: "yahoo.com", mapto: "Yahoo"},
{ urlpath: "google.com", mapto: "Google"}
];
So, say I have a variable urlVar, where the value is some URL (for example, "http://us.mg201.mail.yahoo.com"). Is there any way - other than looping through the array for every variable - to check if urlVar contains any of the substrings in urlMapping.urlPath, and if so, output urlMapping.mapto? (In this case, I want urlVar to find that it contains the substring "yahoo.com" and output "Yahoo".) In my code, I anticipate that I have 100 variables checked against 50 mappings, and performance is important to me. Thanks in advance! I have the following array called 'datacontent' that have the following data: (4, RX33, ) (3, RX54, ) (102, RX44, ) (1, R100, Retail Branch 100) (2, RX12, ) (100, RX55, ) I want them to be sorted into this order: (1, R100, Retail Branch 100) (2, RX12, ) (3, RX54, ) (4, RX33, ) (100, RX55, ) (102, RX44, ) But it is always not sorted and it will give me as follows: (2, RX12, ) (3, RX54, ) (4, RX33, ) (100, RX55, ) (102, RX44, ) (1, R100, Retail Branch 100) My code is as follows: Code: function sortby(i) {
return function(a,b){a = a[i];b = b[i];return a.toLowerCase() == b.toLowerCase() ? 0 : (a.toLowerCase() < b.toLowerCase() ? -1 : 1)}
}
datacontent.sort(sortby(1));
Appreciate any help. I have an array "arr" that is an array of objects. Each object has the same 7 properties. I want to find the index of the object with a property that matches a certain value x in the array arr. How can i accomplish this? The array has hash tables associated with it. arr [ obj [ i ] . property1 + "_" + obj [ i ] . property2 ] = arr [ i ] ; so whats the index of the object where .property1 = x ? Thanks, g I have the following code as shown below: Code: <html>
<script type="text/javascript">
var all = [];
var a = ["1234", "Jim", "Lab1", "5455"];
var b = ["1235", "Jack", "Lab1", "5459"];
var c = ["1236", "Jane", "Lab1", "5455"];
var d = ["1237", "June", "Lab1", "5458"];
var e = ["1238", "Jill", "Lab2", "5461"];
var f = ["1239", "John", "Lab2", "5462"];
var g = ["1240", "Jacab", "Lab3", "5465"];
all.push(a);
all.push(b);
all.push(c);
all.push(d);
all.push(e);
all.push(f);
all.push(g);
for(var i=0; i<all.length; i++){
document.write(all[i] + "<br>");
}
</script>
</html>
How to I get the unique & in order of column 4 given that column 3 is given. Example: If the user provide the value 'Lab1' for column 3, the Javascript will return me the following? Code: "Lab1", "5455" "Lab1", "5458" "Lab1", "5459" Hi, I am working on a project which requires a method to join or split multidimensional arrays according to its arguments, which would be string delimiters for the various dimensions of the array. An example of the join function might be: Code: arr[0]=[1,2,3]
arr[1]=[4,5,6]
arr[2]=[7,8,9]
alert(arr.join_multidimensional_array(".","|"))
The above would alert "1.2.3|4.5.6|7.8.9" The split function: Code: var str = "a.b c.d.e f";
str = str.multidimensional_split("."," ");
This would turn 'str' into an array like this: Code: str[0] = ["a","b"]; str[1] = ["c","d","e"]; str[2] = ["f"]; // or just str[2] = "f"? Any ideas on this would be much appreciated, I've been trying to work out how to code it for hours. Thanks, Gus EDIT: I think I may have found the problem (but not the solution) - it looks as though javascript won't perform a method on an array which is part of another array. Firefox error console gives me "arr[0].join is not a function". 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 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. 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 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? Hi, Here is a working code to copy 2d php array to 2d javascript array. Code: <html>
<head>
<?php
for($i = 0; $i < 3; $i++)
{
for($j = 0; $j < 2; $j++)
{$quest[$i][$j] = $i*10+$j;}
}
?>
<script type="text/javascript">
var questions = new Array(3);
for (var i = 0; i < 3; i++)
{
questions[i] = new Array(2);
}
questions[0] = ["<?php echo join("\", \"", $quest[0]); ?>"];
questions[1] = ["<?php echo join("\", \"", $quest[1]); ?>"];
questions[2] = ["<?php echo join("\", \"", $quest[2]); ?>"];
document.write(questions[0][0] + "<br />");
document.write(questions[0][1] + "<br />");
document.write(questions[1][0] + "<br />");
document.write(questions[1][1] + "<br />");
document.write(questions[2][0] + "<br />");
document.write(questions[2][1] + "<br />");
</script>
</head>
</html>
Now,here's the thing.Notice these lines in the code questions[0] = ["<?php echo join("\", \"", $quest[0]); ?>"]; questions[1] = ["<?php echo join("\", \"", $quest[1]); ?>"]; questions[2] = ["<?php echo join("\", \"", $quest[2]); ?>"]; I would like to put these lines in a loop,something like for (var i = 0; i < 3; i++) { questions[i] = ["<?php echo join("\", \"", $quest[i]); ?>"]; } But even after a lot of efforts I am unable to do so,what am I doing wrong?Thanks Hi, In a nutshell,can anyone tell me how to copy a 2d (two dimensional ,2 dimensional) php array to 2d javascript array?I would be obliged if anyone can provide me a method of doing that OR I have written a code to copy a 2d php array to a 2d javascript array.It is working but there is one problem(please see the following).Can anyone tell me what I am doing wrong here? The 2d php array is $quest[100][6] and the 2d javascript array is questions[100][6] . I have written the javascript code inside the <?php....?> itself using echo "<script language="javascript" type="text/javascript">.......</script>; Now ,inside the javascript,when I try to copy the 2d php array to the 2d javascript array using the following method it works questions[0]= ["<?php echo join("\", \"", $quest[0]); ?>"]; questions[1]= ["<?php echo join("\", \"", $quest[1]); ?>"]; ... and so on However, if I try to do the same using the following method it does not work for (var i= 0; i <= 99; i++) { questions[i]= ["<?php echo join("\", \"", $quest[i]); ?>"]; } Why is that?What mistake am I making?Any help will be deeply appreciated.Thanks -----------------------------THE CODE------------------------------------ <?php Access database and store result of mysq_query in $result....... $result = mysql_query($query); for ( $count = 0; $count <= 99; $count++) { $quest[$count]=mysql_fetch_array($result,MYSQL_NUM);; } echo "<script language="javascript" type="text/javascript"> var questions = new Array(100); for (var i = 0; i <100; i++) { questions[i] = new Array(6); } /*The following method of copying 2d php array to 2d javascript array is not working for ( var i = 0; i <= 99; i++) { questions[i]= ["<?php echo join("\", \"", $quest[i]); ?>"]; } */ /*The following method ,however,is working*/ questions[0]= ["<?php echo join("\", \"", $quest[0]); ?>"]; questions[1] = ["<?php echo join("\", \"",$quest[1]); ?>"]; questions[2] = ["<?php echo join("\", \"",$quest[2]); ?>"]; ....and so on </script>"; mysql_close($db_server); ?> Hi, i can't find the mistake in my little script hope someone can help me. PHP Code: <?php /* -------------------- read thumbfolder -------------------- */ function isRdyPfD($filename){ if ($filename == '.' || $filename == '..') { // To-Top-Dir return false; } $ext = explode(".",$filename); $ext = $ext[sizeof($ext) - 1]; $allowedformats = array ( 'jpg', 'png', 'jpeg', 'gif' ); return in_array($ext,$allowedformats); } function getPicsfromDir($dir){ /* array with names of the pictures in $dir */ if (is_dir($dir)) { if ($dh = opendir($dir)) { $filearray = array(); while (($file = readdir($dh)) !== false) { if (isRdyPfD($file) === true) { $filearray[] = $file; } } closedir($dh); return $filearray; } } else { return false; } } // End Function $thumbs = getPicsfromDir("./images/thumbs/"); /* -------------------- thumbfolder -------------------- */ echo "<div id='thumbslider'>\n"; echo "<ul id='thumbs'>\n"; for($i = 0; $i < count($thumbs); $i++){ echo "<li><img src=\"./images/thumbs/$thumbs[$i]\" onclick=\"thumbClick($i)\" /></li>\n"; } echo "</ul>\n"; echo "</div>\n"; /* -------------------- big size images folder -------------------- */ $bigSizeImages = getPicsfromDir("./images/"); //print_r($bigSizeImages); $jsValue = ''; for ($j=0; $j < count($bigSizeImages); $j++){ $jsValue = $jsValue . $bigSizeImages[$j]; if ($j < (count($bigSizeImages)-1)) { $jsValue = $jsValue . ","; } } ?> <script type="text/javascript"> images = new Array(<?php echo $jsValue ?>); function thumbClick(pos){ //alert(pos); alert(images[pos]); } </script> I can't trace the images array values? thanks for a feedback!!! I'm having major pains trying to figure this out. I'm kind of new to Javascript, I need to open a text file from an external server, store each line in an array, then search that array for a certain word (HIGH), and if it exists then write something to the webpage, and if not, write something else. Here is what I have so far: Code: <html>
<head>
<title>Test</title>
<script>
<!--
function test(x) {
if (wxd1txt.readyState === 4 && wxd1txt.status === 200) { // Makes sure the document is ready to parse and Makes sure it's found the file.
var wxd1text = wxd1txt.responseText;
var wxd1array = wxd1txt.responseText.split("\n"); // Will separate each line into an array
var wxd1high = wxd1array.toString(); //Converting the String content to String
//var highsearchreg = new RegExp("HIGH");
//var wxd1high = wxd1array[x].search(highsearchreg);
document.write(wxd1high);
if (wxd1high.search("HIGH") >= 0){
document.write("HIGH RISK");}
else {
document.write("NO RISK");}
}
}
//-->
</script>
</head>
<body>
Hi!
<script>
<!--
var Today = new Date();
var ThisDay = Today.getDate();
var ThisMonth = Today.getMonth()+1;
var ThisYear = Today.getYear();
var Hour = Today.getHours();
var Day2 = Today.getDate()+1;
var Day3 = Today.getDate()+2;
if (navigator.appName != "Microsoft Internet Explorer") {
ThisYear = ThisYear + 1900;}
if (ThisMonth < 10) {
ThisMonth = "0" + ThisMonth;}
if (ThisDay < 10) {
ThisDay = "0" + ThisDay;}
if (Hour == 2 || Hour == 22 || Hour == 23 || Hour == 0 || Hour == 1) {
var wxHourd1 = 0600}
else if (Hour >= 3 && Hour <= 10) {
var wxHourd1 = 1300;}
else if (Hour >= 11 && Hour <= 13) {
var wxHourd1 = 1630;}
else if (Hour >= 14 && Hour <= 16) {
var wxHourd1 = 2000;}
else if (Hour >= 17 && Hour <= 21) {
var wxHourd1 = 0100;}
//var wxurld1 = "http://www.spc.noaa.gov/products/outlook/archive/"+ThisYear+"/KWNSPTSDY1_"+ThisYear+""+ThisMonth+""+ThisDay+""+wxHourd1+".txt";
var wxurld1 = "http://www.spc.noaa.gov/products/outlook/archive/2010/KWNSPTSDY1_201005101300.txt" //(High risk day for testing)
//document.write(wxurld1); //Use this to verify this section is working
if (window.XMLHttpRequest)
{
wxd1txt=new XMLHttpRequest();
}
else // IE 5/6
{
wxd1txt=new ActiveXObject("Microsoft.XMLHTTP");
}
wxd1txt.open("GET", wxurld1, true);
wxd1txt.onreadystatechange = test();
// -->
</script>
</body>
</html>
When added to a webpage, nothing shows up except the "Hi!" and there are no errors in the Javascript Console in Google Chrome. Is this possible with Javascript, and if so, what am I doing wrong or not doing? Also, I have 2 URLs, one is a text file that has the HIGH text I want for an example, the other is the current file, which shouldn't have HIGH in it (unless the weather in the US turns really bad) Hello I'm have some javascript objects with arrays that should be transferred as php array. Its posted by ajax httpRequest. How can I return php array, from the javascript? JS Code: ['asd1', 'asd2', 'asd3'] via Ajax => PHP PHP Code: array('asd1', 'asd2', 'asd3'); Hi, i have an input value array for customer ids, i also need to make a copy of that array into another input element on submit to use for another process. So far here is what i have come up with regarding the js the current html is this Code:
<!-- original input -->
<input id="cb<?php echo $i;?>" name="cid[]" value="<?php echo $commissions[$i]['id'];?>" onclick="isChecked(this.checked);" type="checkbox" />
<!-- this is new html input which is outside the $i loop that i need a copy of cid[] stored on submit
<input type="hidden" name="ids[]" onsubmit="valueTovalue();" />
<!-- here is the js so far -->
<script type="text/javascript">
function valueTovalue()
{
var valin = document.adminForm.cid.value; //cid is the array cid[]
document.adminForm.ids.value = valin; //copy the array to the new input element array ids
}
</script>
so basically if they click 1 cid then ids will also show 1, if they click all cid then ids will show all as well. will that work the way i have it, am i even close here.. thanks update: what i have seems to work fine for text values or string values but not for arrays, what am i missing that it wont copy an array? Array ( [cid] => Array ( [0] => 1 ) [task] => remarksonly [remark] => hhhyyy [boxchecked] => 1 [ids] => Array ( [0] => ) ) am i getting closer lol Code:
function valueTovalue()
{
var valin = cid.concat;
document.adminForm.ids.value = valin.concat;
return(true);
this has to be close i hope Code: document.adminForm.ids.value = [].concat(document.adminForm.cid); Sorry if this question sounds dumb but I'm a JS noob. Basically I need to create a script that will take three numerical grades entered from a prompt, as well as the student's fictitious name; then take the average of the highest and lowest grades. So far I've gotten it to: Accept then display the student's name Take three grades then figure out and display the average of all three. I still need it to: Calculate and Display the average of the highest and lowest scores Display all three scores that were entered I assume that I'll have to instantiate an array, then input values from the prompt, but everything I have tried has failed. See my script below. <script type = "text/javascript"> <!-- var gradeCounter, gradeValue, total, average, linebreak = "<br />", name, grade; total = 0; gradeCounter = 0; name = window.prompt("Input Student Name") grade = window.prompt( "Input Numerical Grade, -1 to Quit:", "0" ); gradeValue = parseInt( grade ); while ( gradeValue != -1 ) { total = total + gradeValue; gradeCounter = gradeCounter + 1; grade = window.prompt("Input Grade, -1 to Quit:", "0"); gradeValue = parseInt( grade ); } if ( gradeCounter != 0 ) { average = total / gradeCounter; document.write(name) document.write(linebreak) document.write("Average: " + average); } else document.write( "<p>No grades were entered</p>" ); // --> </script> Code: <html>
<head>
<script type="text/javascript">
<!---
var Jane=new Array ("Female","Red","Lipstick","28",","45789546");
var Mary=new Array ("Female","Orange","Lipstick","25",","45789547");
var Elle=new Array ("Female","Blue","Lipstick","21",","45789548");
document.write(Jane[0]);
document.write(Jane[1]);
document.write(Jane[2]);
document.write(Jane[3]);
document.write(Jane[4]);
//-->
</script>
<html>
Please help me with the above code. I would like to have a prompt so I can enter one of the three girls name (array) then it would display all the elements. For example: Enter a name: Jane the output would be : Female Red Lipstick 28 45789546 Please help. Thank you very much. |
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