javascript - Getting the names of all classesids contained within a css file? - Stack Overflow

admin管理员组

文章数量:1220485

Is there a way, or a tool, which can be used to get a list of the names of all the classes / ids contained within a css file?

I need to build an xml mapping of all css classes / ids, and doing it manually is very tedious for css files that contain thousands of styles.

Is there a way, or a tool, which can be used to get a list of the names of all the classes / ids contained within a css file?

I need to build an xml mapping of all css classes / ids, and doing it manually is very tedious for css files that contain thousands of styles.

• javascript
• css

Share Improve this question Follow edited May 3, 2014 at 12:33 user3199690 4444 bronze badges asked May 3, 2014 at 12:27 AliAli 267k267267 gold badges591591 silver badges784784 bronze badges 4

• The title reads "css file", the first paragraph reads "javascript file" and the second one reads "css files". Which is it? – PhistucK Commented May 3, 2014 at 12:29
• @PhistucK Sorry, that was a typo. I've fixed it. Its 'css files' – Ali Commented May 3, 2014 at 12:30
• I did something similar by writing some code. – Ejaz Commented May 3, 2014 at 12:34
• This looks like a parser, it might help you get where you want. codetheory.in/parsing-css-in-javascript – PhistucK Commented May 3, 2014 at 12:34

Add a comment  | 

4 Answers 4

Sorted by: Reset to default 14

1. Include your css file into any html file.

2. In console execute the following code:

   Array.prototype.forEach.call(document.styleSheets[0].cssRules,function(a){console.log(a.selectorText)})

3. In the console will be the listing of all css tags used in your stylesheet.

You can iterate over document.styleSheets to get each style sheet, then iterate over the rules to find everything that matches a class or ID selector. The following is a simplistic approach that provides a general approach, the regular expressions to get the classes and IDs from the rules needs more work.

function getClassesAndIds() {
  var sheet, sheets = document.styleSheets;
  var rule, rules;
  var classes = [];
  var ids = [];
  var temp;

  for (var i=0, iLen=sheets.length; i<iLen; i++) {
    sheet = sheets[i];
    rules = sheet.rules;

    for (var j=0, jLen=rules.length; j<jLen; j++) {
      rule = rules[j];

      // Get the classes
      temp = rule.cssText.match(/\.\w+/g);

      if (temp) {
        classes.push.apply(classes, temp);
      }

      // Get the IDs
      temp = rule.cssText.match(/\#\w+/g);

      if (temp) {
        ids.push.apply(ids, temp);
      }
    }
   }
  // Return an array of the class and ID arrays
  return [classes,ids];

  // or as an object
  // return {classes:classes, ids:ids};
}

window.onload = function() {
  console.log(getClassesAndIds());
};

From memory there were some quirks in older IE around sheets and rules but right now it evades me…

See my working example here :)

https://codepen.io/pixelfast/pen/rNrovmj

<script>
function getEm() {
  url = document.getElementById("url").value;

  fetch(url)
    .then((response) => response.text())
    .then((data) => {
      var cssText = data;

      var classRegex = /\.([\w-]+)/g;
      var idRegex = /#([\w-]+)/g;

      var classes = [];
      var ids = [];

      var match;
      while ((match = classRegex.exec(cssText)) !== null) {
        classes.push(match[1]);
      }

      while ((match = idRegex.exec(cssText)) !== null) {
        ids.push(match[1]);
      }

      console.log("Classes: " + classes);
      console.log("IDs: " + ids);

      document.getElementById("classes").innerHTML = classes + "<hr>";
      document.getElementById("ids").innerHTML = ids;
    });
}
</script>


<!-- HTML -->

<input style="width:400px" type="text" id="url" value="https://getbootstrap.com/docs/5.3/assets/css/docs.css">
<button onclick="getEm()">Get Em</button>
<hr>
<div id="classes"></div>
<div id="ids"></div>

In my case, i need all class names (there are selectors which is start with ".icon-" ) in icons.css for listing all defined font icons.

const {cssRules} = Object.values(document.styleSheets)
      .find(sheet =>
        Object.values(sheet.cssRules).find(rule =>
          (rule.selectorText || '').match(/^.icon/)
        )
      ) || {cssRules: {}}

console.log(Object.values(cssRules).map(i => i.selectorText))

本文标签： javascriptGetting the names of all classesids contained within a css fileStack Overflow