JavaScript - Catch Array From Javascript Function In Php

Hi

I'm an AS3 dev learning Javascript.

I'm currently writing a simple script that loads an image as seen below. I deliberately misspell the file name to test the fail.

Code:

var fileName = "anImageThatDoesntExist.jpg";
var image = new Image();
image.onload = imageLoaded;
try {
	image.src = "images/" + fileName;
} catch( error ) {
	console.log('load error', error.message );
} finally {
	console.log('unable to catch error!')
}
function imageLoaded( event ) {
     console.log('image loaded');
}

When I run this script I was expecting the 'catch' to pick up the error and tell me that the file doesn't exist. The 'catch' statement is ignored and 'finally' is executed.

I would be very grateful if someone could let me know if I'm writing the try/catch incorrectly or whether it doesn't work in this way when loading an image.

Many thanks in advance....

Hi,

I am facing a problem in passing replace() function as an argument in user defined java function, can any one help me how to resolve it?

intention is to pass a file path to my user defined function, but before passing the path i want to replace the character '\' to '\\'

I am posting my javascript function he

<a href="#" onclick="OpenDocPreview('<%# Eval("PATH")%>'.replace(/\\/g,"\\\\"), '<%# Eval("Filename")%>')"><%# Eval("DocTitle") %></a>


function OpenDocPreview(url, docname) {
alert('message from search base : ' + url + ' ' + docname);
}

thank you,

I've got a function that returns the value of a radio button group. However the application allows to "hide" some groups on others responses and that effectively make the radio groups not exist. This causes issues with calculations using the total value of the groups combined. I need a way to return a value of '0.00' IF the function does not find the group/returns an error.This is what I currently got to but doesnt work. The function does not work at all.
Code:

function  funcRadioCalc(RadioName)
{
var chkList1= document.getElementById (RadioName);
var arrayOfCheckBoxes= chkList1.getElementsByTagName("input");
var bob;
try {
	for( var i=0;i<arrayOfCheckBoxes.length;i++){
		if (arrayOfCheckBoxes[i].checked) {
		bob= arrayOfCheckBoxes[i].value;
		if (bob!=undefined||bob!=""){
			throw "yep";
		}else{
			throw "nope";
		}
	}
}
catch (er){
	if(er=="nope")
    {
    	return "0.00";
    }
  if(er=="yep")
    {
		return bob;
	}
}
}

If you try some codes and then catch exception, it should catch the exception when there is. However, if there is a setInterval method in the try clause, then the exception cannot be caught... why???

the following works ( a usual method is invoked in the try clause):
Code:

<script language="javascript" type="text/javascript">
function invoke()
{   var i=0;    
    return i.x.y;
}

try
{
      alert(invoke());     
}  
catch(ex){ alert(ex); } //Any Exception will be caught.
</script>

if the highlighted line is changed as below (using setInterval method), then it fails...
Code:

<script language="javascript" type="text/javascript">
function invoke()
{   var i=0;    
    return i.x.y;
}

try
{
      setInterval(alert('invoke())',1000);     
}  
catch(ex){ alert(ex); } //The Exception will NOT be caught.
</script>

any idea? thx in advance

I would like to create a link from one page to another.
Easy - I know. But I would like that link to to take me to a certain part of the other page, specifically towards the bottom of the page.

Is that possible to do? And if so, what are the different ways I can specify where in the page to go? (i.e. what are the parameters that I can play with)

Thanks!

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.

How can I call a PHP Function inside a Javascript Function? This is what I have so far, but I don't think I'm doing it the right way.
Any suggestions?

PHP Code:
<?php
function phpQuery(){

     $query = mysql_query("INSERT INTO mytable VALUES('','name','email')");

}
?>
<script type="text/javascript">
function delayQueries()
{
  timeoutID = window.setTimeout(doQueries, 2000);
}

function doQueries()
{
  var runQuery = "<?php phpQuery(); ?>";    
}
</script>

I made a mouseover event of a caption on a picture, when I hover the opacity of the background color of the hover and the text goes down. What I want is that when I hover over the image which the caption is floating on, the onmouseover event gets activite. For an imaginary example:
Code:

function unhighlight(x) {
x.style.backgroundColor="transparent"
}

Function ActivationFuction()
{
activate.function="unhighlight"
}

thanks

Hi everyone,

I am pretty new at javascript OOP.

I have a javascript file that has plenty of javascript functions, variables, arrays, etc.

I need to convert this into an object.

Here is an example:

Code:

var myvar1 = '';
var myvar2 = new array();
var myvar3 = new array();
var myvar4;
var myvar5 = 60;
var myvar6 = '';

function myfunc1(){
 myvar1 = 'hello';
 return myvar1;
}

function myfunc2(somenum=0){
 myvar5 = somenum;
 //calling myfunc1() from within this function.
 //do something in here
}

function myfunc3(){
 //calling myfunc1() from within this function.
 for(i=0;i<somelength;i++){
   myvar2 = myvar3[i]; (something to put into the array)
 }
}

1. I need to create an object and put ALL the varibles (myvar1 - myvar5) in that object.
2. Then the first two functions "myfunc1 and myfunc2" inside the same object.
2. And the function myfunc3 needs to sit OUTSIDE my object as a regular javascript function. It calls on myfunc1 (which is inside the object) and also inserts data into myvar2 (which is classified inside the object) and myvar3 (which is classified inside the object as well).

This is what i came up with, but it's not going well:
Code:

var myobj1 = function(){
 this.myvar1 = '';
 this.myvar2 = new array();
 this.myvar3 = new array();
 this.myvar4;
 this.myvar5 = 60;
 this.myvar6 = '';

 var myfunc1 = function(){
  this.myvar1 = 'hello';
  return this.myvar1;
 }

 var myfunc2 = function(somenum=0;){
  this.myvar5 = somenum;
  //calling this.myfunc1() from within this function.
  //do something in here
 }
}

function myfunc3(){
 //calling mynewobj.myfunc1() from within this function.
 for(i=0;i<somelength;i++){
   mynewobj.myvar2 = mynewobj.myvar3[i]; (something to put into the array)
 }
}

var mynewobj = myobj1;

HELP.....!!!!
i really want to get into object oriented world, so thanks in advance.

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,
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!!!

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);

?>

I've been trying for several hours to solve this University problem but I'm just unable to get it done.
I'm supposed to create a function that takes an array with all the A,B,C,D ... and shift them one place to the right (for instance array of A,B,C,D should be shifted and be like D,A,B,C - the last character goes to first position)

Here is the code that I've been dealing with:

Code:

var abcArray = ['a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'];

function shift(anyArray)
{
var newArray = Array(anyArray.length);
for (var position = 0; position < newArray.length; position = position + 1)
{
if (position == 0)
{
newArray[position] = anyArray[anyArray.length - 1];
}
else
{
newArray[position] = anyArray[position - 1];
}
}
anyArray = newArray;
}

shift(abcArray);
document.write(abcArray);

If I remove the function and try this code directly on the array it does work, but when I use the code as it is just like you see - the function shift doesn't change the Array and doesn't shift the values inside one position to the right and I have no clue why.

Anyone has some ideas?!

I would like to pass an array to a function but how does the program know which array I would like to choose from??
Lets say I have 3 arrays and I would like to pass array C, to my function.
I checked the web but they only show if you have ONLY 1 array but NOT for multiple arrays.
How would I even go about doing this??


Code:

var arrA=new Array("fox.com","nbc.com","abc.com", "google.com");
var arrB=new Array("car","bike","boat", "plane");
var arrC=new Array("1","2","3", "4", "5", "6", "7", "8", "9");

function display(myArray){
   myArray[1] = "changed";
}

display(myArray);

document.writeln(myArray[1]);

thanks

Array.prototype.each = function (fn) {
this.map(fn)
}

This is my each function that works great in every other browser but IE. UGH! What am I doing wrong? the error points to the this in the function.

Is it that IE doesn't like map? Has anyone seen this before? I thought my code was correct. Works perfect in FF, chrome and opera. the canvas text doesn't work in opera, but it does render the features so the each function is working.

I'll post the code if needed, but it's huge. here's the script running.
http://www.pdxbusiness.com/canvas/golf/