<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
#count-checked-books {
color:red;
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
</head>
<body>
<form action="#" id="bookfromsample">
<p><label><input type="checkbox" id="checkAll"/>Book Name</label></p>
<div id="booksection">
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book1"/> Book 1</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book2"/> Book 2</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book3"/> Book 3</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book4"/> Book 4</label></p>
value="book1"/> Book 1</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book2"/> Book 2</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book3"/> Book 3</label></p>
<p><label><input type="checkbox" class="booknamecls" name="bookname"
value="book4"/> Book 4</label></p>
</div>
<span id="count-checked-books">0</span> selected books <br><br>
<button type="button">get book</button><br><br>
<div id="display"></div>
<div id="display2"></div>
</form>
</body>
<script>
$(document).ready(function () {
//prop all checkbox selected or unseleted
$('#checkAll').click(function () {
debugger;
$('.booknamecls').prop('checked', this.checked);
});
$('.booknamecls').change(function () {
debugger;
var check = ($('.booknamecls').filter(":checked").length == $('.booknamecls').length);
$('#checkAll').prop("checked", check);
});
//checkbox value count
var checkboxes = $('#bookfromsample p input:checkbox');
checkboxes.change(function(){
debugger;
var countcheckbox = checkboxes.filter('#booksection :checked').length;
$('#count-checked-books').text(countcheckbox);
});
//get checkbox value name parameters
$('#bookfromsample input:checkbox').change(function(){
debugger;
var booknameval=$('#booksection input:checkbox').map(function(n){
if(this.checked){
return this.value;
};
}).get().join(',');
$('#display').html("formate one: "+booknameval);
})
// or other formate
<!-- $("button").click(function(){ -->
<!-- debugger; -->
<!-- var bookname = []; -->
<!-- $.each($("input[name='bookname']:checked"), function(){ -->
<!-- bookname.push($(this).val()); -->
<!-- }); -->
<!-- $('#display2').html("formate two: "+bookname.join(",")); -->
<!-- }); -->
});
</script>
</html>
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