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How do I ALTER a PostgreSQL table and make a column unique?
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how to show alternate image if source image is not found? (onerror working in IE but not in mozilla)
...endless loop if the onerror image itself generates an error.
EDIT
To avoid endless loop, remove the onerror from it at once.
<img src="imagenotfound.gif" alt="Image not found" onerror="this.onerror=null;this.src='imagefound.gif';" />
By calling this.onerror=null it will remove the onerro...
Triggering HTML5 Form Validation
... field sets to the users one at a time. For browsers that support HTML5 validation, I'd love to make use of it. However, I need to do it on my terms. I'm using JQuery.
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Rails: around_* callbacks
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It makes sense and is not in the official Rails guides.
– Dan S.
Nov 21 '18 at 19:04
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What command opens Ruby's REPL?
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Cancel/kill window.setTimeout() before it happens
...ly: var timer1 = setTimeout(removeStatusIndicator, statusTimeout); This avoids the nested function calls.
– HarleyDave
Aug 29 '14 at 11:25
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How to style a div to be a responsive square? [duplicate]
I want my div to adapt its height to always equal its width. The width is percental. When the parent's width decreases, the box should decrease by keeping its aspect ratio.
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Reset PHP Array Index
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How can I find all matches to a regular expression in Python?
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regex for matching something if it is not preceded by something else
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@BradKent I didn't read your "not" in "not match", that why I said it would match. You case looks like a \b(?!foo)\w*bar\b to me then.
– emyller
Jul 19 '18 at 16:08
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