问题
I want to always show up/down arrows for input "number" field. Is this possible? So far I haven't had any luck...
http://jsfiddle.net/oneeezy/qunbnL6u/
HTML:
<input type="number" />
CSS:
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
-webkit-appearance: "Always Show Up/Down Arrows";
}
回答1:
You can achieve this (in Chrome at least) by using the Opacity property:
input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
opacity: 1;
}
As stated above, this will likely only work in Chrome. So be careful using this code in the wild without a fallback for other browsers.
回答2:
If you're trying to get the same appearance across different browsers you may be forced to use a plugin/widget or build one yourself, the main browsers all seem to implement number spinners differently.
Try jQuery UI's spinner widget it offers a lot more versatility when it comes to styling.
Working Example
<p>
<label for="spinner">Select a value:</label>
<input id="spinner" name="value" />
</p>
$("#spinner").spinner();
来源：https://stackoverflow.com/questions/25194631/is-it-possible-to-always-show-up-down-arrows-for-input-number