This is a bookmarklet that gives some heuristics for data quality of the books in a search result, author page, or list.

To use, go to this page and copy the bookmarklet! (GitHub won't let me place the bookmarklet here).

[Get the Bookmarklet](https://s4xfk.csb.app/#name=Data+Quality+Score&js=javascript%3A%0Aasync+function+main%28%29+%7B%0A++class+DQSChecks+%7B%0A++++%2F**%0A+++++*+%0A+++++*+%40param+%7BObject%7D+opts+%0A+++++*+%40param+%7BAbstractPageHandler%7D+opts.pageHandler%0A+++++*%2F%0A++++constructor%28%7Bchecks%2C+pageHandler%7D%29+%7B%0A++++++this.checks+%3D+checks%3B%0A++++++this.pageHandler+%3D+pageHandler%3B%0A++++++this.table+%3D+document.createElement%28%27table%27%29%3B%0A++++++this.table.classList.add%28%27dqs-results%27%29%3B%0A%0A++++++this.style+%3D+document.createElement%28%27style%27%29%3B%0A++++++this.style.textContent+%3D+%60%0A++++++++.dqs-running-check+td+%7B+padding%3A+0+

What Is a Regex? And how does this combination of charactersc find any hex value in a document? Well, read on dear Coder because I will be explaining this in this tutorial.

So, the regular expression /^#?([a-f0-9]{6}|[a-f0-9]{3})$/ defines a search pattern to find hex codes that are used to code colors. Let's break down exactly how the regex does that here in this tutorial. Specifically, let's break down the characters in the regex and explain what they do. Regex contain literal characters and meta characters. Using an escape character or changing the order of a character in the regex will determine if the character is literal or meta. Literal characters are like their name implies. They are the actual character. For example, the character 'a' literally means 'a'. As opposed to a meta character which does something to the search and does not mean the actual character that's typed. For example, the string 'abc*' means find strings tha