Ajax使用HTML数据类型将布尔值和HTML从服务器传递到客户端

只需使用JSON进行响应:

<?php
if ($result->num_rows > 0) {
    $html = '<p>There are some user already </p>';
    $result = false;
} else{
    $html = '<p>List is empty </p>';
    $result = true;
}
$response = ["html"=>$html, "result"=>$result];
header("Content-Type: application/json");
echo json_encode($response);

然后,在JS中:

ajaxcall.done(function(data) {
    var result = data.result;
    $('#call-result').html(data.html);
});

jQuery将自动解析类型为的响应 json