用jQuery进行AJAX调用并获得结果

Question

jQuery.ajax({
    type: "POST",
    url: "index.php?page=Chat",
    data: { action: "sendMessage" },
}).done(function(msg) {
    jQuery("#main").append(msg);
});

and my PHP code simple returns a string

return 'myString';

Unfortunately myString is not added to the #main-container . What is wrong with this code?

Answer 1

The OP tried to treat php pages as functions but php pages cannot return value like functions. Therefore the solution of this question is to print $mystring in php page instead of returning it.