How to call javascript function only when checkbox is checked
Better to use onchange event and check inside function if checked or not
function stickyheaddsadaer(obj) {
if($(obj).is(":checked")){
alert("Yes checked"); //when checked
$("#page-header-inner").addClass("sticky");
}else{
alert("Not checked"); //when not checked
}
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" name="TT_sticky_header" id="TT_sticky_header_function" value="{TT_sticky_header}" onchange="stickyheaddsadaer(this)"/>HTML
<input type="checkbox" id="switch" onclick="change()">
JS
function change() {
var decider = document.getElementById('switch');
if(decider.checked){
alert('check');
} else {
alert('unchecked');
}
}