使用JavaScript中的正则表达式验证货币金额[重复]
||
这个问题已经在这里有了答案：
没有找到相关结果
已邀请:
3 个回复
凰葱崎济邯
/(?:^\\d{1,3}(?:\\.?\\d{3})*(?:,\\d{2})?$)|(?:^\\d{1,3}(?:,?\\d{3})*(?:\\.\\d{2})?$)/（三位尾随数字，而不是两位）。为了解决这个问题，我现在基本上将表达式加倍了；要么将整个事物与逗号分隔符和一个句点作为基数相匹配，要么将整个事物与逗号分隔符和一个逗号作为基数点相匹配。 明白我的意思变得越来越混乱了吗？ (^_^) 这是详细的解释：(?:^ # beginning of string \\d{1,3} # one, two, or three digits (?: \\.? # optional separating period \\d{3} # followed by exactly three digits )* # repeat this subpattern (.###) any number of times (including none at all) (?:,\\d{2})? # optionally followed by a decimal comma and exactly two digits $) # End of string. | # ...or... (?:^ # beginning of string \\d{1,3} # one, two, or three digits (?: ,? # optional separating comma \\d{3} # followed by exactly three digits )* # repeat this subpattern (,###) any number of times (including none at all) (?:\\.\\d{2})? # optionally followed by a decimal perioda and exactly two digits $) # End of string.。通常，正则表达式也捕获（返回匹配项）所有子模式。所做的所有事情据说都不必去捕捉子模式。因此，从技术上讲，如果您将所有都取出来，则完整的内容仍将与您的整个字符串匹配，这看起来更加清晰：/(^\\d{1,3}(\\.?\\d{3})*(,\\d{2})?$)|(^\\d{1,3}(,?\\d{3})*(\\.\\d{2})?$)/敦肌
/^(?:\\d+(?:,\\d{3})*(?:\\.\\d{2})?|\\d+(?:\\.\\d{3})*(?:,\\d{2})?)$/^ # Start of string (?: # Match either... \\d+ # one or more digits (?:,\\d{3})* # optionally followed by comma-separated threes of digits (?:\\.\\d{2})? # optionally followed by a decimal point and exactly two digits | # ...or... \\d+ # one or more digits (?:\\.\\d{3})* # optionally followed by point-separated threes of digits (?:,\\d{2})? # optionally followed by a decimal comma and exactly two digits ) # End of alternation $ # End of string.拟蓬
function foo (s) { return s.match(/^\\d{1,3}(?:\\.?\\d{3})*(?:,\\d\\d)?$/) }