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Javascript how-do-i-check-whether-a-checkbox-is-checked-in-jquery

How to check whether a checkbox is checked in jQuery?

//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
}

Javascript how-do-i-check-whether-a-checkbox-is-checked-in-jquery

$("#checkbox").is(':checked')

Javascript how-do-i-check-whether-a-checkbox-is-checked-in-jquery

document.getElementById('checkbox').checked;

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