element = xGetElementById(obj.ID+i);
position = element;
I need this several times in my script and I am sure it createst quite a lot of overhead. And I would like to pass xGetElementById(obj.ID+i) into an element array. like:
element = new Array();
element[i]=xGetElementById(obj.ID+i);
So I can call back element[i] etc in my script by saving some overhead BUT (there is always a 'but' in my posts ) then:
oes anybody know of a good reference document/source for data types that you can pass to a function, please? What I want to establish are the variety of elements that can pass data to a function in the following way:If you set a value to a table cell (<td>) then you retrieve it in the function thus:
function(row) by calling function(this).
I know that divs and spans can do this too, but how about images in a loop with unique names etc?
I have been trying to grasp the whole 'Pass By Value/Reference' thing for a few hours now. From what i can make out:
Passing by value will make a copy of the value, pass it as a function argument and the function will store the changes, the original value is not affected. So for example:
JavaScript Code: var cost = 145;var postage = .3;var a = function() {return cost + postage;} //Using an Anonymous function for this
If you was then to pass the value of 'a' to a function argument it would copy and not change the original value.
If you pass by reference it will change the original value. When you pass a reference to a value through a series of different functions and the value is constantly being changed the change happens on the original value and can be seen outside the function.
The problem is i cannot think of how or why this would be used. I havn't got to develop many large applications so im trying to think of a few situations when passing by reference would be used.
I am using a js calendar script that populates a text field with a date. When clicking in the field the calendar shows then i choose a date, calendar closes, the date is now in the field. great it works fine.
I want to make this call from a button. when adding the code to a href, the popup shows but nothing happens when selecting a date. I have tried the following scripts will failure.
*html a href and img tag left out* onclick="if(self.gfPop)gfPop.fPopCalendar(document.this_form.elements['example[]']);return false;"
I got a couple of comboboxes were the user selects a series of numbers. Once a selection is made, the value is appended to an input box. The idea is that the appended values form a telephone number, or at least part of one, that will then be used to search trough a database to look for a matching number.If I select "021" from indicatif, the script will append 021 to the input "blabla". The problem is, if I now select "022", the input will show "021022" instead of replacing the 021 with 022.
What I would like is that, for each combobox, the script replaces the selected value with the new one instead of simply appending it, like instead of say 021022555666 it would show 021555 or 022666 or 021666 depending on what is selected...you get the idea?Is this doable? Needless to say I'm a total noob at javascript.
I have an unordered list that I am using as a menu. This list contains sub lists.
I found out how to get the index of the primary unordered list item that is being hovered but I am not getting the syntax correct to reference the individual items of this listto get the HTML, the position, height and lengthof this item.
$(" #nav li").hover(function(){ // Locate the index of the singular list item that is being hovered var index = $(this).parent().children('li').index(this); // This is incorrect var $itemObject = $(this).parent().children('li')[index];
Let me preface this with the usual disclaimer: I am new to this and have only been programming with Javascript, PHP for about 2 weeks now and have been lucky enough to have resolved the issues I have encountered. This one however is puzzling to me.
I have a HTML form created that collects member information. It calls, on submit, a confirmation page that lists all the data fields entered. This all works great. However, when I then post the variables from the first html form page from my second confirmation html page to my PHP script, using document.write with input type=hidden and inserting the address variable into the value field, the Javascript only passes this variable up to the first space. It is the only variable I pass that has a space in it.
I have verified that the variable does indeed contain the whole address and I have also verified when I execute the following: document.write ('<input type="hidden" name="address1" value='+address_1+'>');
the address_1 parameter passed to the php script only passes the string up to the first space.
I even tried to put fixed text in there instead of a variable (e.g.)
What type of variable is an empty array element? I thought it was undefined, but i noticed that they have different behavior than undefined does:
var r=Array(1); var s=r.concat([0,"",null,undefined]); alert (s.toSource()) //==="[, 0, "", null, (void 0)]" typeof s[0] //==="undefined" typeof s[4] //==="undefined"
As you can see, 0 and 4 both === undefined. Yet, they don't have the same toSource()... Is this special type named anything specific? Or more importantly, can it be detected outside of an array as being distinct from undefined? I am thinking this would be the same type as ({}).nonProp ... I guess the question is actually, "can you tell the difference between uninitialized and undefined"?
how do i pass the values of listbox[] to javascript?
below is my javascript:
function Add() { Obj=(document.getElementById("scopeid[]")); alert(Obj.value); }
alert gives me only the last selected value and not the entire values. i.e if the user has selected 2 ,3 and 4th option, it gives me value of only 4th item instead of all three. how to do it?
I'm apparently misunderstanding what I'm reading on prototyping. My main task is to squeeze some performance out of an app that's a bit slow on IE, and it looks like large Arrays and their overhead may be part of the problem. I'm trying to replace those with my own array type based on Object and extend it with helper functions like .length. Here's a munged sample of what I've tried:
In our ordering system, we have to type in various values for several items at a time. This means in one single form, for one order, we could be typing in a batch number 4 or 5 times. I can valiadate this easy enough with Javascript when there is only 1 line. But what if there is more than 1?
With PHP you add [] to the end of the form element's name. But how do I get javascript to work with this?
Code:
Basically, the batch number, expiry date and pallet/box number is mandetory. If they arn't entered, it needs to fail (return false). It doesn't seem to be doing anything, just moving on to the next part which is checking other parts of the form which isn't repeated.
var backgrounds = new Array("images/tiles/pattern_044.gif","images/tiles/pattern_045.gif","images/tiles/pattern_046.gif"); // setEvents is triggered by onload in the body tag function setEvents() { changeBkg();
In that function, i call a function (load_CDThumbnail) that creates an array and returns the newly created array
Then, another function is called (show) that needs to pass the newly created array as a parameter. That's the part that i don't know how to program How to pass an array as a parameter? Code:
I have an array list that I create in the page.load event. I'm creating it here, because the array list is built from the data in a database based on the value of the querysting.
I want to use this array list as the list of photos in a slideshow. What do I do o that jquery can get access to the array?
I have a site I am working on, and on one page, I am using google maps api to display a custom map, center icon, and preprogrammed markers. What I would like to do is query mysql to get a array of data, which includes longitude, latitude, and a name. Then pass this data into javascript so it will automatically put markers around a certain radius around the center icon. here is the php mysql select statement This select statement queries a +5/-5 in all directions around the users current longitude and latitude. code...
Basically I am trying to retrieve my image path data from mysql to my variable created in my javascript. This is the code I m using. code...
However, I cant solve the for loop part. I wanted to pass each and every data retrieved from mysql query into the array created in javascript part inside the for loop. Can anyone teach me how to do that?
I need to pass an array of client side events to the next page. Here my user would perform a few events which would be stored in a javascript array, upon completion a submit button would be used to post all that data to the next page.
An example of such a process is listed below, returning that array back to php so that I can post it to the next page. I am trying to populate different entries made into textbox into the array arr. And when I would click the submit button, I want to post that array.
<html> <head> <script type='text/javascript'> function retText(form)
[Code]....
I want to return that arr back and on post I want to send that array to the next page.
pass a JavaScript value to PHP.It's based around jQuizMe script. I'm trying to pass the JavaScript value to a new page, so I can do what I like with it in PHP.quizInfo.numOfRight is the JavaScript array of the value of the persons final quiz score is stored in.
PHP Code:
if( quizInfo.hasQuit ){ var ScoreForPHP = quizInfo.numOfRight; WHAT NEXT? }
I'm thinking that perhaps we will need to redirect the person to another page when quizInfo.hasQuit is ran, then storing the JavaScript value into a PHP Array.
" $.post(Drupal.settings.newURL.admincharacteristics+ 'display/' + encodeURIComponent(a) "In tha above code, I want to have variable "a" to be an array?
I am having one select box, when i will select the value from select box i want to call one java script function and pass the parameter as array of some values to js function.
