remark.split("[")[0]//截取remark字符串中"["之前的字符
let remark = '12345[6789]'
let remarkSplit = remark.split("[")[0]
console.log(remarkSplit)//12345remark.split("[")[0]//截取remark字符串中"["之前的字符
let remark = '12345[6789]'
let remarkSplit = remark.split("[")[0]
console.log(remarkSplit)//12345
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