javascript - ngmodel 未在选择标签上绑定(bind)整数值

Question

我将从服务中获取选定值作为整数，并需要将其作为整数发回。请查看 Plnkr代码

<!-- Working -->
<div ng-init="selectedvalue = '3'">
    <select ng-model="selectedvalue">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
  </select>
</div>
<!-- Not Working -->
<div ng-init="selectedvalue2 = 3">
    <select ng-model="selectedvalue2">
    <option value="1">1</option>
    <option value="2">2</option>
    <option value="3">3</option>
    <option value="4">4</option>
  </select>
</div>
<!-- Not Working -->
<div ng-init="selectedvalue3 = 3">
    <select ng-model="selectedvalue3">
    <option value=1>1</option>
    <option value=2>2</option>
    <option value=3>3</option>
    <option value=4>4</option>
  </select>
</div>

https://plnkr.co/edit/R7QfJfy6m6IgHKL07tFI?p=preview

Answer 1

在 ng-model 中你可以添加一个过滤器编号来像这样转换:

ng-model="selectedvalue3 | number"