Question

我收到错误

Uncaught SyntaxError：非法中断语句

在break;上，如果服务器返回5，我想停止for循环。我使用下面的代码：

<script type="text/javascript">
    function getrblstatus(rbl, hash) {
        var rblhosts = [<?php echo $rblhosts ?>];
        var ActiveRbls = rblhosts.length;
        var progress = '1';
        for (i = 0; i < ActiveRbls; i++) {
            ///// Post data to server /////
            $.ajax({
                url: '<?php echo $site_url?>/includes/lib/ajax.php',
                data: {
                    action: 'getrblstatus',
                    for: rbl,
                    hash: hash,
                    rbl_host: rblhosts[i]
                },
                type: 'post',
                success: function (data) {
                    var percent = (progress/ActiveRbls)*100;
                    percent = percent.toFixed(2);
                    if(data == 5) {
                        console.log('Hash not correct');
                        break;
                    }
                    else{
                        $('#rbl_table > tbody').append(data);
                        $('#progressbar').width(percent+'%');
                        $("#progressbar").html(percent+"% Completed");
                        progress ++;
                        continue;
                    }
                }
            });
        }
    }
</script>

Answer 1

您不能将异步代码（AJAX调用）与同步代码混合（用于/ break / continue）。所以你可以await AJAX请求：

async function getrblstatus(rbl, hash) {
    var hosts = [<?php echo $rblhosts ?>], progress = 1;
    for (const rbl_host of hosts) {
        const data = await new Promise((success, error) => $.ajax({
            url: '<?php echo $site_url?>/includes/lib/ajax.php',
            data: {
                action: 'getrblstatus',
                for: rbl,
                hash: hash,
                rbl_host
            },
            type: 'post', success

        }));
        var percent = (progress++ / hosts.length) * 100;

        if(data == 5) {
            console.log('Hash not correct');
            break;
        }
        else {
            $('#rbl_table > tbody').append(data);
            $('#progressbar').width(percent+'%');
            $("#progressbar").html(percent+"% Completed");
        }
    }
}

由于await，break;位于for循环级别。

未捕获的SyntaxError：非法的break语句

1 个答案: