js把字符串(yyyymmdd)轉換成日期格式(yyyy-mm-dd)

1.javascript var r="20112233".replace(/^(\d{4})(\d{2})(\d{2})$/, "$1-$2-$3") console.log(r) 2.java var dateString = '19930701'; var pattern = /(\d{4})(\d{2})(\d{2})/; var formatedDate = dateString.rep
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