我有$count_results_quiz = $pdo->query("SELECT COUNT('
sr.statistic_ref_id,
sr.quiz_id,
sr.user_id,
sr.total_time,
qm.name AS q_name,
qm.category_id,
qm.subcategory_id,
sc.sub_category_id,
sc.sub_category_name AS quiz_type,
pl.time,
pl.points,
COUNT(qs.correct_count) AS count_correct')
FROM pro_quiz_statistic_ref AS sr
JOIN pro_quiz_master qm ON qm.id = sr.quiz_id
JOIN pro_quiz_subcategory sc ON sc.sub_category_id = qm.subcategory_id
JOIN user_points_log pl ON pl.quiz_id = sr.quiz_id AND pl.user_id = '$get_id'
JOIN pro_quiz_statistic qs ON qs.statistic_ref_id = sr.statistic_ref_id
WHERE
sr.user_id = '$get_id' AND
qs.correct_count = '1'
GROUP BY
sr.statistic_ref_id,
qs.correct_count
ORDER BY qm.name ASC")->fetchColumn();
，我想这样做，当我点击<tr id="tr_color" >内的按钮“活动帐户”时，值“1”将添加到数据库中的“active_account”列中这与我合作。 td的{{1}}也会变为蓝色，问题就在这里！不要跟我改变。
的JavaScript
background-color答案 0 :(得分：0)
您在使用JavaScript添加的样式中无法!important。将其更改为
document.getElementById("tr_color").style.backgroundColor = "blue";
它应该有效。或者，如果您确实需要使用!important，请尝试使用类来代替：
document.getElementById("tr_color").className += " importantClass";
使用以下CSS：
.importantClass { background-color: blue !important; }