在Javascript中返回正则表达式匹配（）的位置？ [英] Return positions of a regex match() in Javascript?

问题描述

有没有办法在Javascript中检索正则表达式匹配（）结果字符串中的（起始）字符位置？

Is there a way to retrieve the (starting) character positions inside a string of the results of a regex match() in Javascript?

推荐答案

以下是我的想法：

// Finds starting and ending positions of quoted text
// in double or single quotes with escape char support like \" \'
var str = "this is a \"quoted\" string as you can 'read'";

var patt = /'((?:\\.|[^'])*)'|"((?:\\.|[^"])*)"/igm;

while (match = patt.exec(str)) {
  console.log(match.index + ' ' + patt.lastIndex);
}

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