vjrj/beyond-covid

A Chrome extension that turns the word 'brexit' into 'breadsticks' on all web pages.

Brexit Means Breadsticks (Chrome Extension)

A chrome extension that turns the word brexit into breadsticks on all pages.

You can install the Chrome Extension here

The code I ended up writing for this was:

var elementsInsideBody = [...document.body.getElementsByTagName('*')];
// This makes an array of everything inside the body tag
//console.log(elementsInsideBody);

//a function that loops through every single item
function findAndReplace(){
  elementsInsideBody.forEach(element =>{
    element.childNodes.forEach(child =>{
      if(child.nodeType === 3){
        child.nodeValue = child.nodeValue.replace(/brexit/gi, 'breadsticks');
      }
    });

  });
}

window.onload = findAndReplace();

The puzzling thing about this was that .getElementsByTagName('*'); gets me parent nodes, but I need to look inside them for the text nodes, because that's what I'm trying to change. Adding another .forEach() and passing in the childNodes in there before using the .replace() method on it is what makes it work.

The following are the methods I tried prior to the code solution above.

I did try to write this from scratch using something like

  const words = [...document.body.getElementsByTagName('*')];

  const strip = words.forEach(element => {
      element.innerHTML.replace(/Brexit/gi, 'Breadsticks');
  });

However, I soon found that .replace() doesn't actually replace things in the DOM, and that I'd have to find another solution.

I then tried something that worked (Hurray!)

  document.body.innerHTML = document.body.innerHTML.replace(/brexit/gi, 'Breadsticks');

but this also stripped out all kinds of things like .eventListeners from the page, which rendered apps like YouTube and Discord useless. Foiled again.

I also found alternative solutons from a stranger on the internet:

  function replaceInDom(node, original, replacement) {
  if (node.nodeType === Node.TEXT_NODE) {
    node.textContent = node.textContent.replace(original, replacement);
  }
  if ((node = node.firstChild)) {
    do {
      replaceInDom(node, original, replacement);
    } while ((node = node.nextSibling));
  }
}

Which was great, because I've not come across replaceInDom before.

There is another working solution listed on 9to5google which uses for loops, which I was trying to avoid.

I used Steven Frank's solution for a previous version, which you can find on his cloud to butt code