select all and unselect all using javascript

This script is commonly used for developers for getting user input. The user will click the lot of checkbox  instead of clicking the lot of checkbox user can use the select all checkbox only one click the all check box will be selected. uncheck the select all check box to unselect all check box.

This user friendly because It will reduce the user work. This simple script (select all and unselect all using javascript) is used to reduce the user difficulties. 

select all and unselect all in single check box

This is very common for us provideing user list of choices and let them select their preferences from given choices. This kind of script is also needed in admin side also for update and delete records.

Selctcting all checkboxes by selecting the checkbox in the header of the grid view is a common operation in jquery.

selectall unsect all Script.php

<style>
body {
    width: 610px;
}
#frmCheclAll {
    border: #F0F0F0 2px solid;
    background: #FAF8F8;
    padding: 10px;
    margin-left: auto;
    margin-right: auto;
    width: 400px;
    border-radius: 5px;
}
#divCheckAll {
    background-color: #F2F2F2;
    border: #DADADA 1px solid;
    margin-bottom: 15px;
    width: 6em;
    padding: 4px 10px;
}
#divCheckboxList {
    border-top: #DADADA 1px solid;
}
.divCheckboxItem {
    padding: 6px 10px;
}
</style>
<script src="https://code.jquery.com/jquery-2.1.1.min.js" type="text/javascript"></script>
<script>
function check_uncheck_checkbox(isChecked) {
    if (isChecked) {
        $('input[name="language"]').each(function() {
            this.checked = true;
        });
    } else {
        $('input[name="language"]').each(function() {
            this.checked = false;
        });
    }
}
</script>
<div id="frmCheclAll">
    <h1>Select Subjects</h1>
    <div id="divCheckAll">
        <input type="checkbox" name="checkall" id="checkall" onClick="check_uncheck_checkbox(this.checked);" />Select All
    </div>
    <div id="divCheckboxList">
        <div class="divCheckboxItem">
            <input type="checkbox" name="language" id="language1" value="tamil" />Tamil</div>
        <div class="divCheckboxItem">
            <input type="checkbox" name="language" id="language2" value="English" />English</div>
        <div class="divCheckboxItem">
            <input type="checkbox" name="language" id="language3" value="Maths" />Maths</div>
        <div class="divCheckboxItem">
            <input type="checkbox" name="language" id="language4" value="Science" />Science</div>
        <div class="divCheckboxItem">
            <input type="checkbox" name="language" id="language4" value="Social Science" />Social Science</div>
    </div>
</div>