如何在数据列表中选择设置HTML PHP

本文介绍了如何在数据列表中选择设置HTML PHP的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

问候我想知道是否有一种方法可以在数据列表中设置选定的值.我想要这样的东西

Greetings I would like to know if there is a way to set a selected value in a datalist. I would like something like this

<input list="cars" class="form-control" name="caBrands" style="width:300px;"> <datalist id="cars" > <option selected="selected" value="BMW"> <option value="Toyota"> <option value="Mitsubishi"> </datalist>

推荐答案

数据列表只是与文本输入元素一起使用的自动完成列表.如果要预先设置一个值，只需设置输入的值即可:

The datalist is just an auto-complete list to be used with a textual input element. If you want to pre-set a value, just set the value of the input:

<input list="cars" value="BMW" class="form-control" name="caBrands" style="width:300px;"> <datalist id="cars"> <option value="BMW"> <option value="Toyota"> <option value="Mitsubishi">

如果要始终从列表中选择一个值，则可以使用select元素.这样可以将一个选项标记为选中，但不允许自由格式输入:

If you want to always select a value from a list, you can use a select element. This allows marking one option as selected, but it doesn't allow freeform input:

<select class="form-control" name="caBrands" style="width:300px;"> <option selected value="BMW">BMW</option> <option value="Toyota">Toyota</option> <option value="Mitsubishi">Mitsubishi</option> </select>