check if input is checked code example

Example 1: if checkbox is checked

if ($('#id_input').is(':checked')) { }

Example 2: fill checkbox javascript

// Check
document.getElementById("checkbox").checked = true;

// Uncheck
document.getElementById("checkbox").checked = false;

Example 3: how to check if input is checked javascript

const cb = document.getElementById('accept');
console.log(cb.checked);