Javascript替换参考匹配组？ [英] Javascript replace with reference to matched group?

问题描述

我有一个字符串，例如 hello _there _ 。我想分别用< div> 和< / div> 替换两个下划线，使用<强>的JavaScript 即可。输出（因此）看起来像 hello< div>那里< / div> 。该字符串可能包含多对下划线。

I have a string, such as hello _there_. I'd like to replace the two underscores with <div> and </div> respectively, using JavaScript. The output would (therefore) look like hello <div>there</div>. The string might contain multiple pairs of underscores.

我正在寻找的方法是 在每场比赛中运行一个函数，顺便说一下Ruby做到了：

What I am looking for is a way to either run a function on each match, the way Ruby does it:

"hello _there_".gsub(/_.*?_/) { |m| "<div>" + m[1..-2] + "</div>" }

或能够引用匹配的组，再次以它的方式可以在ruby中完成：

Or be able to reference a matched group, again the way it can be done in ruby:

"hello _there_".gsub(/_(.*?)_/, "<div>\\1</div>")

任何想法或建议？

推荐答案

"hello _there_".replace(/_(.*?)_/, function(a, b){
    return '<div>' + b + '</div>';
})

哦，或者你也可以：

"hello _there_".replace(/_(.*?)_/, "<div>$1</div>")

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