Answers for "get checked checkbox value javascript"

javacript is checkbox checked

//using plane javascript 
if(document.getElementById('on_or_off_checkbox').checked) {
    //I am checked
} 

//using jQuery
if($('#on_or_off_checkbox').is(':checked')){
    //I am checked
}

how to check if input is checked javascript

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