字符串转数组 str1 = "[1, 21, 3]" str2 = "[[1, 21, 3], [4, 5, 6], [7, 8, 9]]" let jsonReady = str.trim().replace(/'/g, '"'); let arr = JSON.parse(jsonReady); [ '1', '21', '3' ] [ [ '1', '21', '3' ], [ '4', '5', '6' ], [ '7', '8', '9' ] ] 普通的多行字符串,数字之间用空格隔开(空格数量不固定) "1 2...