Convert Jquery code to javascript for .bind event in jquery [closed]

I want to convert .bind of jQuery to JavaScript. Here is the code:

$("#cke_bdy").bind("keypress", function(e) {

some code...
});

Can anybody please help?

Answer

Related to the Mozilla documentation of javascript :

Add an event listener on any element should be coded as :

element.addEventListener(type, listener, useCapture);

Remove an event listener on any element should be coded as :

element.removeEventListener(type, listener, useCapture);

Example :

// For instance
var onClickOnId = function () {
    console.log('click on #id');
}

document.getElementById('#id').addEventListener('click', onClickOnId, true);

document.getElementById('#id').removeEventListener('click', onClickOnId, true);

But a question persist : Why would you not use jQuery to bind your events ?

By the way, .bind() is deprecated and should be replaced by .on() in the latest releases.