[SOLVED] How to remove HTML attribute starting with letter + number?

How to remove HTML attribute starting with letter + number?

I want to remove attribute tags that start with a letter "z" followed by any digits ("z#").

But I have errors as you can see when running this snippet:

$("#main article").each(function(){
  var DE = new RegExp(/z{1}(\d{0,})\w+/); 

  $(this).removeAttr(function (){
    return (this.match(DE));
  });
});

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<section id="main">
  <article z1  > AAA </article>
  <article z2  > BBB </article>
  <article z3  > CCC </article>
  <article z101> DDD </article>
  <article z102> EEE </article>
  <article z103> FFF </article>
</section>

What is the problem?

Solution

There are a few issues in your attempt:

removeAttr doesn't take a function as argument. You have to pass the name of the attribute (a string).
There is no iteration happening over the attributes. For that you could use the this.attributes collection
The \w+ would allow letters to follow at the end. That's not what you stated in the question.
The regex lacks end-of-string markers, so it would also allow the pattern to occur somewhere in the middle of a long string with other characters.

Also:

You don't need the RegExp constructor when you already have a regex literal
{1} is useless in a regex.
{0,} is equivalent to *
To check whether a string matches with a regex, you don't need match (which returns an array), but can better use test.

$("#main article").each(function(i, article) {
    $(this.attributes).each(function () {
        if (/^z\d*$/.test(this.name)) $(article).removeAttr(this.name);
    });
});
console.log($("#main").html());

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<section id="main">
  <article z1  > AAA </article>
  <article z2  > BBB </article>
  <article z3  > CCC </article>
  <article z101> DDD </article>
  <article z102> EEE </article>
  <article z103> FFF </article>
</section>