PHP AJAX - <input>元素可以像<form>一样具有“action”吗？

Forms have an action attribute to specify where (for example a .php file) to post to. Do <input> elements have the action attribute?

1. The answer is most likely no. But I wish to know what concept am I getting wrong here?
2. Is there a equivalent of action for <input>?
3. The reason I am asking this is that I have a few checkboxes, and I wish to use AJAX to fire something to a PHP file, such that a div changes when the checkboxes are ticked (I don't want a whole page reload). How should I go about doing this?

I am still drafting the code at this stage, but an example can be seen here.

Appreciate your suggestions!

Based on comments it really sounds like you want something to be sent when any number of checkboxes might be changed.

Add an event handler to all of them, serialize() the form and post it whenever any one of them changes

var $form =$('#myForm'); 
$form.find(':checkbox').change(function(){
     var formData = $form.serialize();
     $.post('/someFile.php', formData, function(response){
         // do something with response
     }).fail(function(){
         alert("Oops something bad happened');
     });
});

Use jQuery AJAX Methods:

AJAX is the art of exchanging data with a server, and update parts of a web page - without reloading the whole page.

EX:

$(document).ready(function(){
    $("button").click(function(){
    // You can call ajax on any event of html element like checkbox checked, dropdown changed
        $.ajax({url: "demo_test.txt", success: function(result){
            $("#div1").html(result);
        }});
    });
});

$(document).on('change', '#checkboxid', function() {
    if ($(this).is(':checked')) {
        $('#container').load('pages/somephpfile.php');
    }

});

Use .load() on change of checkbox

1. you cant set which php file to load based on the checkbox status.

Also try

$(document).on('change', '#checkboxid', function() {
    $.ajax({
        type: 'POST',
        url: 'somephp.php',
        dataType: "html",
        success: function(data) {
            $('#container').html(data) //load the data from somephp.php here
        }
    });
});