call a php function in jquery code example

Example 1: call php function in js

<script>
  var phpadd= <?php echo add(1,2);?> //call the php add function
  var phpmult= <?php echo mult(1,2);?> //call the php mult function
  var phpdivide= <?php echo divide(1,2);?> //call the php divide function
</script>

Example 2: jquery code to trigger php function

$.ajax({ url: 'phpscriptname.php',
         data: {function2call: 'getEmployeesList', otherkey:otherdata},
         type: 'post',
         success: function(output) {
                      alert(output);
         }
});