"Check for WCAG 2.0 parsing compliance" by [Steve Faulkner](https://twitter.com/SteveFaulkner) with added support for Alpine and Vue attributes

bookmarklet

javascript:(function(){var a,b,c,d,e,f,g=0;if(a=["tag seen","Stray end tag","Bad start tag","violates nesting rules","Duplicate ID","first occurrence of ID","Unclosed element","not allowed as child of element","unclosed elements","not allowed on element","unquoted attribute value","Duplicate attribute"].join("|"),b=document.getElementById("results"),!b)return void alert("No results container found.");for(c=b.getElementsByTagName("li"),f=0;f<c.length;f++)d=c[f],""!==d.className%26%26(e=(void 0===d.innerText%3Fd.textContent:d.innerText)+"",resultHtml=d.innerHTML,null===e.match(a)%3F(d.style.display="none",d.className+=" steveNoLike",g++):-1!==e.indexOf("not allowed on element")%26%26(-1!==resultHtml.indexOf("<code>ng-")||-1!==resultHtml.indexOf("<code>x-")||-1!==resultHtml.indexOf("<code>ax-")||-1!==resultHtml.indexOf("<code>v-")||-1!==resultHtml.indexOf("<code>:")||-1!==resultHtml.indexOf("<code>%40"))%26%26(d.style.display="none",d.className+=" steveNoLike",g++));alert("Complete. "+g+" items removed.")})();

src.js

(function () {
  var removeFramework = true
  var filterStrings = [
    'tag seen',
    'Stray end tag',
    'Bad start tag',
    'violates nesting rules',
    'Duplicate ID',
    'first occurrence of ID',
    'Unclosed element',
    'not allowed as child of element',
    'unclosed elements',
    'not allowed on element',
    'unquoted attribute value',
    'Duplicate attribute'
  ]
  var filterRE,
    root,
    results,
    result,
    resultText,
    i,
    cnt = 0
  filterRE = filterStrings.join('|')
  root = document.getElementById('results')
  if (!root) {
    alert('No results container found.')
    return
  }
  results = root.getElementsByTagName('li')
  for (i = 0; i < results.length; i++) {
    result = results[i]
    if (result.className !== '') {
      resultText =
        (result.innerText !== undefined
          ? result.innerText
          : result.textContent) + ''
      resultHtml = result.innerHTML
      if (resultText.match(filterRE) === null) {
        result.style.display = 'none'
        result.className = result.className + ' steveNoLike'
        cnt++
      } else if (removeFramework == true) {
        if (resultText.indexOf('not allowed on element') !== -1) {
          if (
            resultHtml.indexOf('<code>ng-') !== -1 ||
            resultHtml.indexOf('<code>x-') !== -1 ||
            resultHtml.indexOf('<code>ax-') !== -1 ||
            resultHtml.indexOf('<code>v-') !== -1 ||
            resultHtml.indexOf('<code>:') !== -1 ||
            resultHtml.indexOf('<code>@') !== -1
          ) {
            result.style.display = 'none'
            result.className = result.className + ' steveNoLike'
            cnt++
          }
        }
      }
    }
  }
  alert('Complete. ' + cnt + ' items removed.')
})();