Question

这与此regex match keywords that are not in quotes类似，但在javascript中，我有这样的正则表达式：

/(https?:((?!&[^;]+;)[^\s:"'<)])+)/

并且需要用标签替换所有网址，但是当它们在引号内时不能替换，我该怎么做？

Answer 1

您可以使用与推荐主题中提议的解决方案相同的解决方案。

JavaScript中的代码段：

var text = 'Hello this text is an <tagToReplace> example. bla bla bla "this text is inside <tagNotToReplace> a string" "random string" more text bla bla bla "foo"';

var patt1=/<[^>]*>(?=[^"]*(?:"[^"]*"[^"]*)*$)/g;
text.match(patt1);
// output: ["<tagToReplace>"]

text.replace(patt1, '<newTag>');
// output: "Hello this text is an <newTag> example. bla bla bla "this text is inside <tagNotToReplace> a string" "random string" more text bla bla bla "foo""

模式说明与提议的F.J.相同：

text            # match the literal characters 'text'
(?=             # start lookahead
   [^"]*          # match any number of non-quote characters
   (?:            # start non-capturing group, repeated zero or more times
      "[^"]*"       # one quoted portion of text
      [^"]*         # any number of non-quote characters
   )*             # end non-capturing group
   $              # match end of the string
)              # end lookahead

如何匹配不在引号内的网址

1 个答案: