角度2和输入范围

Question

IE 11中的输入范围和ngForm始终为空。

我们有样本表格，我们有ngForm，它在chrome中工作正常，但输入范围控制返回始终为null，无法获取所选范围的值。

预期/期望的行为 应返回IE 11输入范围的值

Demo plunker：http://plnkr.co/edit/owcvOZj99gUMB65TZXMx?p=preview

Angular版本：** 2.0.0-beta.17

`import { Component } from '@angular/core';
import { FORM_DIRECTIVES } from '@angular/common';
http://plnkr.co/edit/owcvOZj99gUMB65TZXMx?p=preview
@Component({
  selector: 'my-app',
  directives: [FORM_DIRECTIVES],
  template: `  
  <div class="ui raised segment">  
    <h2 class="ui header">Demo Form</h2>  
    <form #f="ngForm"  
          (ngSubmit)="onSubmit(f.value)"  
          class="ui form">

      <div class="field">  
        <label for="input0">Number</label>  
        <input type="text"  
               id="input0"  
               placeholder="Number"  
               ngControl="number0">  
      </div>

      <div class="field">  
        <label for="inputRange0">Range</label>  
        <input type="range"  
               id="inputRange0"  
               placeholder="Range"  
               ngControl="range0">  
      </div>
      <label>{{f.skuRange}}</label>

      <button type="submit" class="ui button">Submit</button>  
    </form>  
  </div>  
  `
})
export class App {
    onSubmit(form: any): void {
      console.log(form);
      console.log('you submitted value:', form);
    }
  }
`

浏览器：[IE 11]

语言：[TypeScript：版本1.8.10]