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var str = "For more information, see Chapter 3.4.5.1"; var re = /(chapter \d+(\.\d)*)/i; var found = str.match(re); console.log(found);
捕获到了3个结果 : ["Chapter 3.4.5.1", "Chapter 3.4.5.1", ".1"]
["Chapter 3.4.5.1", "Chapter 3.4.5.1", ".1"]
而我认为结果应该只有一个 ["Chapter 3.4.5.1"],请问为什么会有3个?
["Chapter 3.4.5.1"]
光阴似箭催人老,日月如移越少年。
match的返回值包括分组匹配结果。https://developer.mozilla.org...
match
match
的返回值包括分组匹配结果。https://developer.mozilla.org...