javascript - 如何匹配不在引号内的网址

Question

这类似于不在引号中但在 javascript 中的正则表达式匹配关键字，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，但不是当它们在引号内时，我该怎么做？

Answer 1

您可以使用与参考主题中建议的相同的解决方案。

JavaScript 中的代码片段：

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""

模式的解释与提议的FJ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