how to use javascript variable as php function parameters code example

Example 1: javascript access php variable

//passing PHP variable to JavaScript
var myJSVar = <?php echo json_encode($myPHPVar); ?>;

Example 2: javascript call php function with parameters

var deleteClient = function(id) {
    $.ajax({
        url: 'path/to/php/file',
        type: 'POST',
        data: {id:id},
        success: function(data) {
            console.log(data); // Inspect this in your console
        }
    });
};