I'm trying to render a menu containing check boxes something using JQuery according to a defined template in a div. I have a search box which will narrow down the menu.
There is something strange happening. When I have huge list of menu items (around 5000 items), it renders fine initially. Then if I type something and narrow down the result, it works fine. But when I press backspace and go back to the full list of items, the div gets displaced for a second and reappears in the correct position.
I have no clue of whats happening. Any pointers on where to look to debug will be helpful. Thanks!
Take a look at the Chrome Developer Tools. There's a ton of things in there you'll probably never use, but for this task I'd have a look at the elements tab and also the scripts tab to pause JavaScript events and inspect the DOM elements' styles.
This is a generic answer to a generic question though. If you're using Firefox, check out Firebug, but I prefer Chrome's tools and find them better integrated and user friendly, mostly from having used them a lot more.
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I am currently building a site. When I refresh the page (as seen below), the two boxes with the brown outline start out at what seems to be 100% width, but then they re-size after about 1-2 seconds, and there is a small gap on the right hand side.
I'm pretty sure this isn't happening via the CSS, as there is a delay and I've looked through it all myself and can't find anything.
I am using Google Chrome's Developer Tools - is there any way that I can view any related JavaScript being ran on refresh that may be affecting these elements?
You can use a chrome extension to quickly turn off javascript. If the problem dissappears, you know that javascript is causing the problem. If the problem is still there, then it is a CSS issue (which I think is the case, but we can't solve that for you as you didn't provide the code).
here is a link to the javascript switcher extension:
https://chrome.google.com/webstore/detail/quick-javascript-switcher/geddoclleiomckbhadiaipdggiiccfje
I have a use case where there are thousands of items on a list shown to the user. They are loaded a small batch at a time and I see the network traffic going in and out, I see data getting loaded. I see the DOM getting bigger, but the list itself in the UI stops updating (Chrome).
When I examine it, I see thousands of items in the code, when I select the items through console and make it count them, I see the proper number. But in the page itself, I don't see these items get displayed. The list uses drag-and-drop to put items from it into another list (and load additional data about them).
Not using jquery.datatables at the moment, but been meaning to migrate to them a long time ago. I can’t find a good example, though, everything I see uses pagination to split, but what if this is not an option?
How can I pinpoint what it is that is preventing the items from display? The number of entries will vary between 500 and 20 000.
Never mind. everything works as intended, duh. I was stupid and missed something very obvious: things had "display: none" for a very good reason about which I totally forgot (has to do with the core logic of the application). Next time hit me with a stick so I could remember to pay more attention.
Not sure what you meant by saying 'DOM getting bigger' but 'don't see items get displayed'.
Typically JS has a main thread which will handle functions/callbacks as well as view-refresh. So if you operation is blocking , the view will not be refreshing.
As for the pagination is not an option thing, you can consider using DOM-lazy-Loading mechanism where you only put what should be in the current viewport into the dom. As user scroll, you calculate the scroll height dynamically to add/remove items to/from the DOM. One thing to remember is you typically need to define a fixed height for your rows so that you could do the calculation. This lazy-loading way is a common way of solving this type of problem and is widely used by different frameworks like GXT, angular-gird..etc.
I am using the KendoUI html editor, in inline mode. It works fine, but I have found some problems with the arranging of toolbar items. Namely:
I have added custom tools to the toolbar. They are not correctly 'tagged' with the k-group-start, or k-group-end classes, and thus thir edges, and margins are not correct.
I can't influence where the toolbar puts in the 'k-group-break' item (what makes a linebreak on the toolbar).
I have tried to modify these in the selection changed event (according to the demo page, that gets fired every time I click into the edited area), but the kendo built-in logic overwrites my changes after that.
Has anyone encountered this problem? What could be a good solution? I am pretty lost, since I haven't found anything on this topic in the kendo documentation, so some hack might be needed.
Just add a tool ".Separator()" in your tools list and it will create an empty "li" ..
<li class="k-separator k-group-start"></li>
you can than style this element to create the spaces, I have made this li as a block element so it pushed everything which follows down.
Hope this helps.
Cheers
On this website (tested in close-to-latest
Opera, Firefox and Google Chromium on Mageia Linux 3 Cauldron and on Firefox on my Arch Linux VM), the expanders/[+] signs of the navigation menu on the left get shifted a little
upwards and downwards when the sub-menu is expanded/collapsed. That's not the case if the expander in question the last one in the sub-tree (for example, under "Humour" →
"Recommendations").
Why and how can it be avoided? Is it because of the different character in the text? I tried setting it to monospace - it did not help.
It works fine here, but the CSS and generated
DOM are different.
(Note: this is my permanent site while this is the
temporary/testing one. They look mostly the same now, but do not use exactly the same markup, CSS and JS.)
The problem is that I'm trying to make jqTree look more like what I had in the old
jQuery Treeview, and it won't cooperate. I spent an entire day on it yesterday,
and while I fixed many problems, I still have this one.
I tried using Firefox's Firebug, Opera's Dragonfly, and the equivalent tool in Google
Chromium has, but I lack the necessary skills to understand what goes wrong.
It appears that the jQuery Treeview authors tried to optimise performance by using a single image with a different background-position which makes it hard to debug, and I didn't get rid of it yet.
Any pinpoint to the problem, and/or a fix will be appreciated.
So, recently I have been trying to build a user interface form builder that is almost entirely drag and drop. Kind of like Dreamweaver or visual studios I suppose. You guys can see it for yourselves HERE! I am trying to get a right-click menu thing going, however upon getting this working, I realized that it really conflicted with both the draggable and resizable methods. I don't have to right click at all, however when I go to resize or drag, it won't let me stop it. My cursor gets stuck either resizing or dragging, and requires vigorous clicking and shaking to free it. So, I'm assuming that I need a different plugin. Does anybody know of a stress free simple right-click menu that is hopefully compatible with jquery ui? I've tried google but most of them are simply a different version of the one I've already been using.
My second question is much more vague. As I previously mentioned, I'm trying to make a form builder. I'm wondering what the best way to go about this is as I feel sort of lost. My biggest problems right now are figuring out how I'm going to parse everything into code and export it. Does anybody know of anyone else who has attempted this or something similar? Is there any sort of guide?
I know the second questions has potential to be rather annoying, so feel free to only focus on the first one. Any help is appreciated, and I thank everybody who helps me.
EDIT: Just realized that you guys may not know how to use the builder. So far, all you can do is drag panels out onto the building space, and then drag tables within the panels. You can resize the building space, and panels vertically, and you can resize tables both vertically and horizontally. You can move panels and tables within their parent elements. Right click a panel or table for the contextmenu.
EDIT: So I think I found a context menu that will suffice, here it is. So, I guess that only leaves giving me advice on how to go about constructing this form builder.