带有货币符号的 HTML 文本输入字段

问题描述

我想要一个一开始就包含$"符号的文本输入字段，并且无论对该字段进行什么编辑，都可以使该符号保持不变.

I would like to have a text input field containing the "$" sign in the very beginning, and no matter what editing occurs to the field, for the sign to be persistent.

如果只接受数字输入我会很好，但这只是一个花哨的补充.

I would be good if only numbers were accepted for input, but that's just a fancy addition.

推荐答案

考虑使用带边框围绕无边框输入字段的跨度模拟具有固定前缀或后缀的输入字段.这是一个基本的启动示例:

Consider simulating an input field with a fixed prefix or suffix using a span with a border around a borderless input field. Here's a basic kickoff example:

.currencyinput {
    border: 1px inset #ccc;
}
.currencyinput input {
    border: 0;
}

<span class="currencyinput">$<input type="text" name="currency"></span>

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