有没有办法检索Javascript中regex match（）结果的字符串内的（起始）字符位置？
这是我想出的：
// 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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我来说两句