Qiita Teams that are logged in
You are not logged in to any team

Log in to Qiita Team
Community
OrganizationAdvent CalendarQiitadon (β)
Service
Qiita JobsQiita ZineQiita Blog
105
Help us understand the problem. What is going on with this article?
@saekis

JavaScriptでHTMLエスケープ処理

More than 5 years have passed since last update.

JavaScriptでHTMLエスケープする必要があったのでメモ。

一般的なWebアプリの場合、基本的にはサーバサイドでのHTMLエスケープが出来てれば問題無いケースが多い。

ただ、例えばDOMからテキストを取得して再度DOMに突っ込む、みたいな処理をクライアントサイドでやろうとした場合は、JavaScriptで改めてHTMLエスケープする必要がある。

ので、JavaScriptで最低限のHTMLエスケープするメソッド作った。

function escape_html (string) {
  if(typeof string !== 'string') {
    return string;
  }
  return string.replace(/[&'`"<>]/g, function(match) {
    return {
      '&': '&amp;',
      "'": '&#x27;',
      '`': '&#x60;',
      '"': '&quot;',
      '<': '&lt;',
      '>': '&gt;',
    }[match]
  });
}

おしまい。

105
Help us understand the problem. What is going on with this article?
Why not register and get more from Qiita?
  1. We will deliver articles that match you
    By following users and tags, you can catch up information on technical fields that you are interested in as a whole
  2. you can read useful information later efficiently
    By "stocking" the articles you like, you can search right away
saekis

Comments

No comments
Sign up for free and join this conversation.
Sign Up
If you already have a Qiita account Login
105
Help us understand the problem. What is going on with this article?