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$( "SELECTOR" ).attr( "checked" ) // Returns ‘true’ if present on the element, returns undefined if not present
$( "SELECTOR" ).prop( "checked" ) // Returns true if checked, false if unchecked.
$( "SELECTOR" ).is( ":checked" ) // Returns true if checked, false if unchecked.
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//using plane javascript
if(document.getElementById('on_or_off_checkbox').checked) {
//I am checked
}
//using jQuery
if($('#on_or_off_checkbox').is(':checked')){
//I am checked
}
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$("#out_of_stock_toggle").click(function(){
if($(this).is(':checked')){
//show oos
$(".oos").fadeIn();
}else{
//hide oos
$(".oos").fadeOut();
}
});
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if ($('#grepperRocks').is(':checked')) {
// this checkbox is checked
}
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//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
}
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var isChecked = $('#checkboxId').prop('checked');
if(isChecked == true){
//code
}