Question

假设：

This is some text which could have 
line breaks and tabs before and after {code}
and I want them {code} to be replaced {code}in pairs{code} without any issues.

我想：

This is some text which could have 
line breaks and tabs before and after <code>
and I want them </code> to be replaced <code>in pairs</code> without any issues.

JsFiddle：http://jsfiddle.net/egrwD/1

简单的工作文字示例：

var sample1 = 'test test test {code}foo bar{code} {code}good to know{code}';
var regEx1 = new RegExp('(\{code\})(.*?)(\{code\})', 'gi');
var r1 = sample1.replace(regEx1, '<code>$2</code>');

提供：

test test test <code>foo bar</code> <code>good to know</code>

非工作样本

var sample2 = 'test test test {code}\tfoo bar{code} {code}\r\ngood to know{code}';
var regEx2 = new RegExp('(\{code\})(.*?)(\{code\})', 'gi');
var r2 = sample2.replace(regEx2, '<code>$2</code>');

给出：

test test test {code}   foo bar{code} {code}
good to know{code}

Answer 1

看起来你只需要make the pattern match across line breaks，正确地逃避第一个{，并使用正则表达式文字来修复在字符串中双重转义反斜杠的需要：

/(\{code\})([\s\S]*?)(\{code\})/gi

http://jsfiddle.net/mattball/QNak5

请注意，您甚至不需要围绕{code} s：

捕获括号

/\{code\}([\s\S]*?)\{code\}/gi

http://jsfiddle.net/mattball/Jk5cr

RegEx，在键之间提取文本

1 个答案: