JQuery :: Checkboxes Won't Make A Call To UpdateResults Function Within $function()?
Jun 11, 2011
I have a real perplexing issue. In two separate "projects" I had code that displayed checkboxes - when clicked, they would fetch information from a db and display it in the div below. I had code that displayed a jquery date-picker - when clicked, it would fetch information from a db and display it in the div below. My issue comes with this:
On a project I got stuck on this "problem". When you make a json (ajax) call. You also need a callback function. Which means I have to call the next $.getJSON within that callback function to read the next portion of data. In my opinion this is not very readable code...What I want is a nice and readable piece of code. Where you could just write it like this: var data1 = $.getJSON(..); var data2 =$.getJSON(..); I've found a solution here: [URL] (explains my problem perfectly). But it's not compatible with the getJSON story. Is there already a possibility to do this with the jquery library?
I want to use an image map for something unique. The image would have about 10 to 15 (religious) symbols. When the user clicks on a particular symbol it will search the site for a few strings relating to that symbol. For example: Symbol 1 would be a cross when clicked it search the site for "christ, crucifix, christianity". I am sure I can make the image map but how do I make the image map call a function instead of a link.
I'm wanting a table cell click event to remove and replace the table it was clicked on, however I'm finding that as it's deleting the original table object the actual running event code is being replaced and the function is bailing.how I can call the delete/refresh function from outside the event's function scope?
I have just started learning JQuery and have a doubt in the below code. $.get('myhtmlpage.html', myCallBack);The doubt is should the 1st parameter of the get function be a HTML file or can it be a unction name?
I've seen a variety of implementations around that enable selecting all or no checkboxes by using a checkbox to toggle that choice. However, I'm trying to find a way like this: I have two text links on my page: Select All, and Select None. How can I get those links to call a jquery function to select all or select no checkboxes in my form? As a little food for thought:
<head> $(function() { //function for selecting all or none...is there a way to make a single function that passes in a parameter to differentiate between selecting all or selecting none, or do I need a separate function for both?[code]....
<button onClick="return popup('<span onClick='selectShape(1, 1, 1)'>test<span>');" tabindex=Ɖ' onFocus="setFocusColor(0,3)">....</button> This will work perfectly, but as soon as I need to pass Strings inside the selectShape function, I get stuck.
So the question is, how can I create the following and have it working
I want to call java function in javascript.In which we pass one parameter to function and its returns String value which I want to display in alert message.
I have a document that can contain any number of iframes which have further copies of the same document (and so on). In practice, we shouldn't ever have frames within frames, but I'd like to make the implementation a general case.
Various of the functions in the parent document need to call themselves in the child documents with the same parameters as they've just been passed.
Now, I can stick a loop in each function that goes throught the window.frames array and calls the function for each frame, but for I'd like to write a function to do this.
It's at this point that my brain explodes. If I limit it to a single parameter we can do:
I'm in the middle of a JavaScript class, and I've run into a problem with one assignment. ^^; I've been given a pre-written script and HTML code to work with, and am required to modify it. Here's one thing I have to do, via my instructor:
Add an "email" field to this form. This field should also validate as a valid email address. (Hint: after adding the form field to the form itself, your next step will be to expand the function named submitIt() by adding a second if statement to confirm the contents of the email field. You will want to paste into the header and use the validEmail() function which you will find in Script 7.15, highlighted in red on pages 192-3 of your textbook.)
I know how to write the code to validate an email address, but I can't figure out how to call the validEmail() function in the submitIt() function. The code I have now just blanks out all the fields when I hit "submit." Here's the part of the script with the email validation:
window.onload = loadDoc; function loadDoc() { resetForm(document.forms[0]);
This is a very basic version of what I am trying to do. I have a dynamic list which is set in a table. When clicked, a function is run to set up a new list.. The reason I explain that, is that I need to keep it dynamic.Now for the problem:When I run this page, I have the button made right away, then when clicked it creates the new button. The new button should also run the function to create the new button again, but when I click it, I only receive "error on page".
I'm trying to "progressively enhance" one of my surveys using javascript. Basically, I have rating scales that make use of radio buttons as each point on the scale. Each radio button occupies its own cell in a table. I wrote some functions that will highlight cells on mouseover in a color corresponding to its position on the scale (e.g. the lowest point is red, the midpoint is yellow, the highest point is green). When a radio button is clicked, the background of the button's cell and preceding cells in the same row will be colored accordingly. The functions are working well in FireFox and Chrome (I just have to add a few lines using the addEvent function to make it compatible with IE).
The effect looks a lot nicer when I add a function that makes the visibility of the radio buttons hidden.
However, I want to make sure that there is a fallback option in case the functions that color the cells don't work for whatever reason. I would not want the radio buttons hidden in this case.
Is there a method whereby I can call the "hideRadiobuttons" function only if the other functions are successfully executed?
I am creating a little word guess game, with a random function which picks the word from an array of 10 words. The second function checks if the users' letter choice is part of the secret word. Currently, each time the checkGuess() function is called, the word is changed, probably because I am calling the wordPicker() function from within. The wordPicker randomly chooses the word, then returns that word. All I want to do is pull that word into the checkGuess function, without calling the wordPicker function as it currently does. Here is the code:
Create secret word array var wordList = new Array("stealth", "telephone", "internet", "nickel", "marine", "instantiate", "method", "function", "television", "monitor")
I'm working through the sitepoint ajax book and had a problem with a particular chunk of code. I eventually tracked down the error and it was being caused because I had:
Now, one of the sticky threads mentioned that the first is a function call and the second is a function pointer. My questions are:What's the difference between a function call and a function pointer? Why did it cause problems in this particular case? What are the general implications/issues with using one over the other?
is there a way in jQuery to bind variables to function calls similar as prototype.js does it? See [URL]
E.g. in the slideUp method of jQuery you can specify a callback that is called after the effect has finished. I would like to bind a variable to this call so that it is used inside of this callback as a closure.
Is this correct? The following three lines are equivalent, for example, [1] can be replaced with [2] or [3] anywhere in a script without changing the return value and without changing any side effect.
[1] var r = o.f(a,b); [2] var r = o.f.call(o,a,b); [3] var r = o.f.apply(o,[a,b]);
( o is an object and o.f is a function. )
The following three lines are equivalent: [1'] var r = g(a,b); [2'] var r = g.call(this,a,b); [3'] var r = g.apply(this,[a,b]);
( g is a function, for example, var g = function(a,b){return [this,a,b];}. )
My application displays a list of checkboxes to the user. Some of the boxes are related. For eg:
List of boxes: a b c d
Checkboxes a and c are related. If user checks a; c should automatically be checked and vice-versa. Same for de-checking. I need a function to do this.