bootstrap4inputgroup

input-group-append 类添加在输入框的后面。 最后，我们还需要使用.input-group-text 类来设置文本的样式。 Bootstrap4 实例.

透過在文字輸入框、自訂選單、自訂檔案欄位等兩側添加文字內容、按鈕或按鈕群組，輕鬆的擴展表單控制元件。

Input group. Easily extend form controls by adding text, buttons, or button groups on either side of textual inputs, custom selects, and custom file inputs.

Bootstrap Input Group is a set of fields used for collecting data entered by users. Usually containing buttons, text areas or other input.

Input group. Easily extend form controls by adding text, buttons, or button groups on either side of textual inputs, custom selects, and custom file inputs.

The .input-group class is a container to enhance an input by adding an icon, text or a button in front or behind the input field as a help text.