How to convert text to binary code in JavaScript?

Question

Text to Binary Code

I want JavaScript to translate text in a textarea into binary code.

For example, if a user types in "TEST" into the textarea, the value "01010100 01000101 01010011 01010100" should be returned.

I would like to avoid using a switch statement to assign each character a binary code value (e.g. case "T": return "01010100) or any other similar technique.

Here's a JSFiddle to show what I mean. Is this possible in native JavaScript?

Answer 1

What you should do is convert every char using charCodeAt function to get the Ascii Code in decimal. Then you can convert it to Binary value using toString(2):

HTML:

<input id="ti1" value ="TEST"/> <input id="ti2"/> <button onClick="convert();">Convert!</button> 

JS:

function convert() {   var output = document.getElementById("ti2");   var input = document.getElementById("ti1").value;   output.value = "";   for (var i = 0; i < input.length; i++) {       output.value += input[i].charCodeAt(0).toString(2) + " ";   } } 

And here's a fiddle: http://jsfiddle.net/fA24Y/1/

Answer 2

This might be the simplest you can get:

function text2Binary(string) {     return string.split('').map(function (char) {         return char.charCodeAt(0).toString(2);     }).join(' '); }