One known difficulty with the web is that people treat it like an operating system and will "double-click" things like submit buttons. This can lead to two responses being sent. I've seen some JavaScript which seeks to get around this by disabling the submit button for a second after it's first clicked but JavaScript is notoriously slow and most double-clickers will beat it.
Is it normal some of my comments are posting twice?
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One known difficulty with the web is that people treat it like an operating system and will "double-click" things like submit buttons. This can lead to two responses being sent. I've seen some JavaScript which seeks to get around this by disabling the submit button for a second after it's first clicked but JavaScript is notoriously slow and most double-clickers will beat it.