jQuery in the table selector

Hi people of jQuery.

A technique for information on other elements of the line has been mentioned a few times (example)

  var row = $x_UpTill(t, 'TR');
  var index = $('input[name="f10"]', row)[0];
  $s('P55_INDEX',$(index).val());

It took my more long as it should be, but I found the documentation on the current setting of the 'line' represents a limited part of the DOM - in this case, TR us

http://API.jQuery.com/jQuery/#jQuery-selector-context

But I would like to know what the [0]? I'm unable to track documentation relating to this, and the code seems to work without it.

I'm guessing that this could mean that if there are multiple matches for the selector, it uses the first match. Maybe that's performance and safety?

See you soon

It's really stupid. There is always an input with the f10 name element in a given line, so it would be unwise to get the first one. Even then, if you want to get the first and work with jQuery and want to continue working with jQuery objects, then using . eq() | jQuery API Documentation or pseudo-selector of : eq() selector | jQuery API Documentation are much better choices.

In this case, the execution [0] is the same as .get (0) and basically returns the dom instead of a jQuery object element. . get() | jQuery API Documentation It's stupid, in that regard, that, on the next line, it is simply transformed into a jQuery object again...

I would also like to point out that, instead of using $x_UpTill, I prefer to use . closest() | jQuery API Documentation or maybe even better . parents() | jQuery API Documentation

with t as the starting of the line element:

$( 'P55_INDEX', $(t).closest('tr').find('input[name=f10]').val() );

Tags: Database

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