Javascript encode HTML entities on server

Question

In my server application (on Parse Cloud Code), I want save some string data. There are HTML entities here, which I want to encode.

So i find a solution with Javascript:

var txt = document.createElement("textarea");
txt.innerHTML = html;
return txt.value;

This code work perfectly on html pages, where document exists. But there isn't such variable on server.

How can i declare document variable? Or maybe you know another solutions for encoding HTML entities.

possible duplicate of Which characters need to be escaped on HTML? — Jeremy J Starcher
– Jeremy J Starcher, Commented Mar 15, 2014 at 7:33
Look at this discussion: stackoverflow.com/questions/7381974/…. There are only a handful of characters that normally need to be escaped and those can be handled with a few <string>.replace() calls. — Jeremy J Starcher
– Jeremy J Starcher, Commented Mar 15, 2014 at 7:34

Mehran Hatami · Accepted Answer · 2014-03-15 08:10:56Z

1

You could use html-entities on Node, install it like:

npm install html-entities

then you got entities.encode(..) and entities.decode(..) functions:

var Entities = require('html-entities').XmlEntities;
entities = new Entities();
console.log(entities.encode('<>"\'&©®')); // &lt;&gt;&quot;&apos;&amp;©®

there are more examples in usage part on gihub repo.

edited Mar 15, 2014 at 8:10

answered Mar 15, 2014 at 8:05

Mehran Hatami

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Dave Brown · Accepted Answer · 2015-07-26 13:44:04Z

1

function encode(r){
return r.replace(/[\x26\x0A\<>'"]/g,function(r){return"&#"+r.charCodeAt(0)+";"})
}

test.value=encode('How to encode\nonly html tags &<>\'" nice & fast!');

/*************
* \x26 is &ampersand (it has to be first),
* \x0A is newline,
*************/

<textarea id=test rows=11 cols=55>www.WHAK.com</textarea>

answered Jul 26, 2015 at 13:44

Dave Brown

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Eugene Trapeznikov · Accepted Answer · 2015-08-10 09:59:50Z

0

Since I asked this question, I learned JavaScript and AJAX. So, my suggestion will be using AJAX and JSON for communication between browser and server-side.

answered Aug 10, 2015 at 9:59

Eugene Trapeznikov

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