freeCodeCamp/curriculum/challenges/chinese/06-information-security-and.../information-security-with-h.../prevent-ie-from-opening-unt...

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---
id: 587d8248367417b2b2512c3b
title: Prevent IE from Opening Untrusted HTML with helmet.ieNoOpen()
challengeType: 2
videoUrl: ''
localeTitle: 使用helmet.ieNoOpen阻止IE打开不受信任的HTML
---
## Description
<section id="description">提醒一下,这个项目是基于<a href="https://glitch.com/#!/import/github/freeCodeCamp/boilerplate-infosec/">Glitch</a>的以下入门项目构建的,或者是从<a href="https://github.com/freeCodeCamp/boilerplate-infosec/">GitHub</a>克隆的。某些Web应用程序将提供不受信任的HTML以供下载。默认情况下某些版本的Internet Explorer会在您的站点上下文中打开这些HTML文件。这意味着不受信任的HTML页面可能会在您的页面上下文中开始做坏事。此中间件将X-Download-Options标头设置为noopen。这将阻止IE用户在受信任站点的上下文中执行下载。 </section>
## Instructions
<section id="instructions">
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: helmet.ieNoOpen中间件应正确安装
testString: 'getUserInput => $.get(getUserInput("url") + "/_api/app-info").then(data => { assert.include(data.appStack, "ienoopen"); assert.equal(data.headers["x-download-options"], "noopen"); }, xhr => { throw new Error(xhr.responseText); })'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>