PHP / JS REGEX：在字符串中，如何替换尖括号括起来的2个单引号？

Question

Example:

Change

<a href='site.com'>Click Here</a>

into

<a href="site.com">Click Here</a>

Answer 1

Javascript:

str.replace(/<(.*?)'(.+?)'(.*?)>/g,'<$1"$2"$3>');

php:

preg_replace("/<(.*?)'(.+?)'(.*?)>/g",'<$1"$2"$3>',$str);

If you need to catch more than one group inside enclosed brackets then regex is kind of tricky, use this instead:

var bracket = 0;
str = str.split("").map(function(c) {
  if (c === "<") bracket++;
  if (c === ">") bracket--;      
  if (c === "'" && bracket >= 1) {
    return '"';
  } else {
    return c;
  }
}).join("");