How to remove the onkeypress handler?

Question

JavaScript

I am attaching a handler function to input.

input.onkeypress = function(evt) {
      //some code      
}

How can I remove it in another function? Recording in the form:

input.onkeypress = function(evt) {
      evt.preventDefault();  
}

didn't help.

Answer 1

function test() {
    alert('событие активно');
}

input.addEventListener('keypress', test);

input.removeEventListener('keypress', test);

Example - https://codepen.io/anon/pen/LaXRJq

Answer 2

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Webserver Nginx 1.9.12 50%
Framework Yet another PHP framework? Or maybe just a static site?
Language PHP 5.6.18-pl0-gentoo 90%

Answer 3

bootstrap some 3