How can I filter matches inside a specific tag?

I'm trying to replace all ocurrences of a text in an input field which enhanced with TinyMCE, this has to occur every time the user presses the spacebar (similar to the autocorrect feature in Word).

The problem I have is when the replaced string contains the trigger, 开发者_如何学Goit keeps replacing it again and again. For example replacing "hello" with

<span class="replaced">hello world</span>

It will replace it again as

<span class="replaced"><span class="replaced">hello world</span> world</span>

So I have to write a regexp to filter out matches in text that has already been replaced.

Can you help me out?

This is my current code:

for (r in autocorrect_replacements) {
  if (newHtml.indexOf(autocorrect_replacements[r][0]) > -1) {
    replacement_html = '<span class="replaced">'+autocorrect_replacements[r][1] + '</span>';
    newHtml = newHtml.replace(autocorrect_replacements[r][0],replacement_html);
    ed.setContent(newHtml);
}

I'm not a fan of regular expressions, but I think it's the correct solution in this case.

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The regex to get the span would be /<span class="replaced">.*<\/span>/. Not sure if its the right solution.

You can do something like this:

for (r in autocorrect_replacements) {
  if (newHtml.indexOf(autocorrect_replacements[r][0]) > -1) {
        if (!(/<span class="replaced">.*<\/span>/.test(autocorrect_replacements[r][1]))){
            replacement_html = '<span class="replaced">'+autocorrect_replacements[r][1] + '</span>';
            newHtml = newHtml.replace(autocorrect_replacements[r][0],replacement_html);
            ed.setContent(newHtml);
        }
}