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copied!<p>I think what's missing in the answers above is the need to specify a different value for the <code>step</code> attribute, which has a default value of <code>1</code>. If you want the input's validation algorithm to allow floating-point values, specify a step accordingly.</p> <p>For example, I wanted dollar amounts, so I specified a step like this:</p> <pre><code> <input type="number" name="price" pattern="[0-9]+([\.,][0-9]+)?" step="0.01" title="This should be a number with up to 2 decimal places."> </code></pre> <p>There's nothing wrong with using jQuery to retrieve the value, but you will find it useful to use the DOM API directly to get the elements's <code>validity.valid</code> property.</p> <p>I had a similar issue with the decimal point, but the reason I realized there was an issue was because of the styling that Twitter Bootstrap adds to a number input with an invalid value.</p> <p>Here's a fiddle demonstrating that the adding of the <code>step</code> attribute makes it work, and also testing whether the current value is valid: </p> <ul> <li><strong><a href="http://jsfiddle.net/natchiketa/xrujZ/16/">jsFiddle</a></strong></li> </ul> <p><strong>TL;DR:</strong> <em>Set the a <code>step</code> attribute to a floating-point value, because it defaults to <code>1</code>.</em></p> <p><em><strong>NOTE</strong>: The comma doesn't validate for me, but I suspect that if I set my OS language/region settings to somewhere that uses a comma as the decimal separator, it would work. *note in note*: that was not the case for OS language/keyboard settings *German* in Ubuntu/Gnome 14.04.</em></p>

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