如何在 Angular.js 选择框中设置默认选项

问题描述

我在 Google 上搜索过，但找不到任何相关内容.

I have searched Google and can't find anything on this.

我有这个代码.

<select ng-model="somethingHere"
        ng-options="option.value as option.name for option in options"
></select>

有一些这样的数据

options = [{
   name: 'Something Cool',
   value: 'something-cool-value'
}, {
   name: 'Something Else',
   value: 'something-else-value'
}];

输出是这样的.

<select ng-model="somethingHere"
        ng-options="option.value as option.name for option in options"
        class="ng-pristine ng-valid">

    <option value="?" selected="selected"></option>
    <option value="0">Something Cool</option>
    <option value="1">Something Else</option>
</select>

如何将数据中的第一个选项设置为默认值，从而得到这样的结果.

How is it possible to set the first option in the data as the default value so you would get a result like this.

<select ng-model="somethingHere" ....>
    <option value="0" selected="selected">Something Cool</option>
    <option value="1">Something Else</option>
</select>

推荐答案

你可以简单地使用 ng-init 像这样

You can simply use ng-init like this

<select ng-init="somethingHere = options[0]"
        ng-model="somethingHere"
        ng-options="option.name for option in options">
</select>

这篇关于如何在 Angular.js 选择框中设置默认选项的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！