在 javascript if 语句中取消设置 $_POST

Question

我需要取消设置 $_POST['u'] 但只能在 javascript 函数内，现在 $_POST ARRAY 会在页面准备好后自动取消设置...

function resetChat(cod_c){
            if(confirm('are you sure?')){

                if (sendReq.readyState == 4 || sendReq.readyState == 0) {
                    sendReq.open("POST", 'getChat.php?chat='+cod_c+'&last=' + lastMessage, true);
                    sendReq.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
                    sendReq.onreadystatechange = handleResetChat; 
                    var param = 'action=reset';
                    param += '&user=' + document.getElementById('cod_user').value;
                    sendReq.send(param);
                    document.getElementById('txt_message').value = '';

                }
            <?php  unset($_POST['u']); ?>  // this only 1 time after confirm???
            }                       
        }
function handleResetChat() {
        }

Answer 1

PHP 是服务器端语言，JavaScript 是客户端语言 :) 你需要了解更多关于 webdev 的知识 ;)

在 javascript if 语句中取消设置 $_POST

unset $_POST inside javascript if statements

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