什么是字符串的正则表达式模式
<3
和
：）
我尝试了<3的/<\s*3/g /<\d*3/g /<\.*3/g，但是它不起作用。
它与在线正则表达式编辑器匹配，但在我的系统上不起作用。
el.innerHTML = el.innerHTML.replace(/<\s*3/g, '<img src="./img/heart-red.png" alt=""/> ')
答案 0 :(得分：1)
尝试db.any(
"SELECT week_num, COUNT(id)
FROM verylost
GROUP BY week_num
ORDER BY week_num ASC;")
Unhandled rejection error: syntax error at or near "ORDER BY week_num"
at Connection.parseE (/Users/brentnewman/DC/final_project/classroom_emotion/backend/node_modules/pg/lib/connection.js:554:11)
at Connection.parseMessage (/Users/brentnewman/DC/final_project/classroom_emotion/backend/node_modules/pg/lib/connection.js:379:19)
at Socket.<anonymous> (/Users/brentnewman/DC/final_project/classroom_emotion/backend/node_modules/pg/lib/connection.js:119:22)
at Socket.emit (events.js:189:13)
at addChunk (_stream_readable.js:288:12)
at readableAddChunk (_stream_readable.js:269:11)
at Socket.Readable.push (_stream_readable.js:224:10)
at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:145:17)
和/<3/g，应该可以。