Replacing all english quotes with german quotes

Question

im here to ask, if someone can help me with quotation and syntax checking. im aware of the question solution 1, but i don't fully understand that solution.

here is an example, fully integrated into a website and humbly ask, if anyone can find an error?

function rewriteQuotes(){
  var all_p = document.querySelectorAll(`.content_container`);
  var regex_s = /[\s\u2000-\u206F\u2E00-\u2E7F\\'!"#$%&()*+,\-.\/:;<=>?@\[\]^_`{|}~]/;
  for (var i = 0; i < all_p.length; i++) {
    if (all_p[i] != null) {
      var all_nodes = all_p[i].querySelectorAll("*");
      for (var k = 0; k < all_nodes.length; k++) {
        if (all_nodes[k].childNodes.length > 0) {
          var all_children = all_nodes[k].childNodes;
          for (var t = 0; t < all_children.length; t++) {
            if (all_children[t].nodeName == "#text") {
              all_children[t].textContent = all_children[t].textContent.replace(/"/g,"\“");
              all_children[t].textContent = all_children[t].textContent.replace(/\s\“/g,"\ „");
              if (all_children[t].textContent.charAt(0)== "\“") {
                if (all_children[t].textContent.charAt(1) === "") {
                } else {
                  var char_1 = all_children[t].textContent.charAt(1);
                  if (regex_s.test(char_1)) {
                  } else {
                    all_children[t].textContent = "\„" + all_children[t].textContent.substring(1);
                  }
                }
              }
            }
          }
        }
      }
    }
  }
};
document.addEventListener('DOMContentLoaded',function(){
  setTimeout(function(){
    rewriteQuotes();
  },1);
});

<div class="content_container">
  <h2>"Hello"</h2>
  <p>my "aunti" was driving over the "cat" with her "<em>skateboard</em>".</p>
</div>

Answer 1

You can simplify your regex and capture groups of "..." and then replace the quotes of those groups with your desired ones:

const regex = /"(.*?)"/g;
const str = `my "aunti" was driving over the "cat" with her "car"`;
const subst = `„$1“`;

const result = str.replace(regex, subst);
console.log('Original: ', str);
console.log('Result: ', result);