如何在数据列表中选择设置HTML PHP [英] How set selected in a datalist HTML PHP

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>

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