Geek asks and answers

How to find unused classes in my HTML?

There are many tools for finding unused CSS rules in style sheets, such as Chrome Audits and the Dust-Me Selectors add-on for Firefox (unfortunately not compatible with Firefox Quantum).

But what about the other way?

How to find classes that are in my HTML that do not exist in my stylesheets?

+27
source share
5 answers

This might be useful: https://code.google.com/p/find-unused-classes/ . According to the description:

It shows classes that exist in css selectors and do not exist in the html page and in verse style.

, , , JavaScript.

+19

, html

var classesEvery = [];
var elementsEvery = document.querySelectorAll('*');
for (var i = 0; i < elementsEvery.length; i++) {
  var classes = elementsEvery[i].className.toString().split(/\s+/);
  for (var j = 0; j < classes.length; j++) {
    var thisClass = classes[j];
    if (thisClass && classesEvery.indexOf(thisClass) === -1)
      classesEvery.push(thisClass);
  }
}

html , Javascript. , CSS, list-selectors. , , Javascript angularJS. HTML js.

var classesEvery = [];
var elementsEvery = document.querySelectorAll('*');
for (var i = 0; i < elementsEvery.length; i++) {
  var classes = elementsEvery[i].className.toString().split(/\s+/);
  for (var j = 0; j < classes.length; j++) {
    var thisClass = classes[j];
    if (thisClass && classesEvery.indexOf(thisClass) === -1)
      classesEvery.push(thisClass);
  }
}
console.log(classesEvery);
.hidden {
  display: none;
}
<!-- Some random HTML code. -->
<div ng-controller="HomeController" class="container hidden">

  <span>Simple Notifications:</span>
  <div class="rows">
    <div class="col-md-2"><button class="btn btn-primary" href ng-click="simple()">Simple notification</button></div>
    <div class="col-md-2"><button class="btn btn-warning" href ng-click="warning()">Warning notification</button></div>
    <div class="col-md-2"><button class="btn btn-success" href ng-click="success()">Success notification</button></div>
    <div class="col-md-2"><button class="btn btn-danger" href ng-click="error()">Error notification</button></div>
    <div class="col-md-2"><button class="btn btn-grimace" href ng-click="wait()">Wait notification</button></div>
    <div class="col-md-2"><button class="btn btn-primary" href ng-click="pop()">Link to other page</button></div>
  </div>
  <hr/>
  <span>Addding Option from Script:</span>
  <div class="rows">
    <div class="col-md-6">
      <Span>With CLose button</span>
      <button class="btn btn-primary" href ng-click="close()">Close Button </button>
    </div>
    <div class="col-md-6">
      <Span>Fade after 1 Sec</span>
      <button class="btn btn-primary" href ng-click="timeout()">Html notification</button>
    </div>
  </div>
  <br/>
  <hr/>
  <span>Custom Notification and Body output type:</span>
  <div class="rows">
    <div class="col-md-3"><button class="btn btn-primary" href ng-click="Custom_temp()">Custom template</button></div>
    <div class="col-md-3"><button class="btn btn-primary" href ng-click="trusted_html()">Trusted HTML</button></div>
    <div class="col-md-3"><button class="btn btn-primary" href ng-click="default_temp()">Default Template</button></div>
    <div class="col-md-3"><button class="btn btn-primary" href ng-click="file_custom_temp()">Including file from Folder</button></div>
  </div>
  <script type="text/ng-template" id="myTemplate.html">
    <div class="Custom_temp_html">
      <p>Notice, custom temlate is not in the list</p>
    </div>
  </script>
</div>
+7

HTML https://github.com/philipwalton/html-inspector :

  • : CSS , HTML. "unused-classes" CSS HTML , .

    , HTML JavaScript, . js-, language- supports- . .

FAQ .

script:

<script src="http://cdnjs.cloudflare.com/ajax/libs/html-inspector/0.8.2/html-inspector.js"></script>

:

HTMLInspector.inspect(["unused-classes"]);

, ( 2017). , ( 2019 ).

, ( 2014).

+6

HTMLElement, :

function unused(e) {
  const s0 = JSON.stringify(window.getComputedStyle(e));
  const c = Array.from(e.classList.values());
  if (c.length !== 0) {
    c.forEach(cc => {
      e.classList.remove(cc);
      const s = JSON.stringify(window.getComputedStyle(e));
      if (s0 === s) {
        console.log('class ${cc} is unused');
      }
      e.classList.add(cc);
    });
  }
  const id = e.id;
  if (id) {
    e.removeAttribute("id");
    const s = JSON.stringify(window.getComputedStyle(e));
    if (s0 === s) {
      console.log('id ${id} is unused');
    }
    e.id = id;
  }
}

, window.getComputedStyle(), , .

(If you want an HTML version with extraneous classes and identifiers removed, change the code so that classes are re-added only if they affect the styling, call the function recursively on all child nodes, and then use DOM to serialize.) XMLSerializer. serializeToString

0
source

More articles:


All Articles