在<input type=“number">中允许2位小数

问题描述

我有一个 <input type="number">，我想将用户的输入限制为纯数字或小数点后两位小数.

I have a <input type="number"> and I want to restrict the input of the users to purely numbers or numbers with decimals up to 2 decimal places.

基本上，我要求输入价格.

Basically, I am asking for a price input.

我想避免使用正则表达式.有办法吗?

I wanted to avoid doing regex. Is there a way to do it?

<input type="number" required name="price" min="0" value="0" step="any">

推荐答案

step="any" 允许任意位数的小数，使用 step=".01"，最多允许两位小数.

Instead of step="any", which allows for any number of decimal places, use step=".01", which allows up to two decimal places.

规范中的更多详细信息:https://www.w3.org/TR/html/sec-forms.html#the-step-attribute

More details in the spec: https://www.w3.org/TR/html/sec-forms.html#the-step-attribute

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