Javascript – jQuery ui dialog dragging issues

javascriptjquery-ui

I used the jQuery ui (jquery-ui-1.10.3) dialog pluggin for one of our products, and found a possible "problem":
When the hosting page is small or the current view of the hosting page is scrolled to the top, dragging an openned dialog box behaves as what is expected. The problem start to manifest when hosting a dialog in a large page which is scrolled to somewhere not at the top, in which case the dialog box starts to jump around during dragging. It happens to both IE 9 and the latest Firefox (21.0).

The page is dynamically generaed, complex and has to be long. I am not familiar with fiddle, but it seems to have no option for jQuery-ui lib option that I can use.

More specifically, I found if I scoll the hosting page 100px down (so the top 100px of the hosting page is 'feed' into the top border of the browser window) then when I drag the dialog, instead of it following the mouse, it jumps down 100px so that it is out of the mouse capture.

The dialog is initiallized as

$(element).dialog({ 
    autoOpen: false, width: 950, height: 820, 
    modal: false, resizable: true, draggable: true
});

My questiong is: 1) does any one else has the same issue? 2) If so, is this an setting issue or a bug.

Any expert here can help me with it?

Best Answer

I used to have the same issue, content on the page is generated automatically. It is very long.

html, body {position: relative} solves the problem.

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Javascript – Add table row in jQuery

The approach you suggest is not guaranteed to give you the result you're looking for - what if you had a tbody for example:

<table id="myTable">
  <tbody>
    <tr>...</tr>
    <tr>...</tr>
  </tbody>
</table>

You would end up with the following:

<table id="myTable">
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    <tr>...</tr>
    <tr>...</tr>
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  <tr>...</tr>
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I would therefore recommend this approach instead:

$('#myTable tr:last').after('<tr>...</tr><tr>...</tr>');

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Update: Revisiting this answer following recent activity with this question. eyelidlessness makes a good comment that there will always be a tbody in the DOM; this is true, but only if there is at least one row. If you have no rows, there will be no tbody unless you have specified one yourself.

DaRKoN_ suggests appending to the tbody rather than adding content after the last tr. This gets around the issue of having no rows, but still isn't bulletproof as you could theoretically have multiple tbody elements and the row would get added to each of them.

Weighing everything up, I'm not sure there is a single one-line solution that accounts for every single possible scenario. You will need to make sure the jQuery code tallies with your markup.

I think the safest solution is probably to ensure your table always includes at least one tbody in your markup, even if it has no rows. On this basis, you can use the following which will work however many rows you have (and also account for multiple tbody elements):

$('#myTable > tbody:last-child').append('<tr>...</tr><tr>...</tr>');

Best Answer

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Javascript – Add table row in jQuery

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