Show the cheatsheet of RegExr on regex101
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// ==UserScript==
// @name Better Regex101 Cheatsheet
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Show the cheatsheet of RegExr on regex101
// @author You
// @match https://regex101.com/
// @icon https://www.google.com/s2/favicons?sz=64&domain=regex101.com
// @grant none
// @run-at document-idle
// ==/UserScript==
(function() {
window.addEventListener("load",()=>{
let style = `.cheatsheet a {
margin-right: 8px;
color: var(--label-color);
}
#cheatsheet:not(.Z1_qK+#cheatsheet){
display:none;
}
.cheatsheet {
width: 100%;
margin: 6px;
line-height: 15px;
font-size: 14px;
font-family: 'Source Code Pro';
}
.cheatsheet th {
text-align: left;
font-weight: 700;
padding: 10px 0px 2px;
color: var(--label-color);
}`
let html = '<div id="cheatsheet"> <table class="cheatsheet"> <tbody><tr><th colspan="2" data-id="charclasses">Character classes</th></tr> <tr><td><a>.</a></td><td>any character except newline</td></tr> <tr><td><a>\\w</a><a>\\d</a><a>\\s</a></td><td>word, digit, whitespace</td></tr> <tr><td><a>\\W</a><a>\\D</a><a>\\S</a></td><td>not word, digit, whitespace</td></tr> <tr><td><a>[abc]</a></td><td>any of a, b, or c</td></tr> <tr><td><a>[^abc]</a></td><td>not a, b, or c</td></tr> <tr><td><a>[a-g]</a></td><td>character between a & g</td></tr> <tr><th colspan="2" data-id="anchors">Anchors</th></tr> <tr><td><a>^abc$</a></td><td>start / end of the string</td></tr> <tr><td><a>\\b</a><a>\\B</a></td><td>word, not-word boundary</td></tr> <tr><th colspan="2" data-id="escchars">Escaped characters</th></tr> <tr><td><a>\\.</a><a>\\*</a><a>\\\\</a></td><td>escaped special characters</td></tr> <tr><td><a>\\t</a><a>\\n</a><a>\\r</a></td><td>tab, linefeed, carriage return</td></tr> <tr><th colspan="2" data-id="groups">Groups & Lookaround</th></tr> <tr><td><a>(abc)</a></td><td>capture group</td></tr> <tr><td><a>\\1</a></td><td>backreference to group #1</td></tr> <tr><td><a>(?:abc)</a></td><td>non-capturing group</td></tr> <tr><td><a>(?=abc)</a></td><td>positive lookahead</td></tr> <tr><td><a>(?!abc)</a></td><td>negative lookahead</td></tr> <tr><th colspan="2" data-id="quants">Quantifiers & Alternation</th></tr> <tr><td><a>a*</a><a>a+</a><a>a?</a></td><td>0 or more, 1 or more, 0 or 1</td></tr> <tr><td><a>a{5}</a><a>a{2,}</a></td><td>exactly five, two or more</td></tr> <tr><td><a>a{1,3}</a></td><td>between one & three</td></tr> <tr><td><a>a+?</a><a>a{2,}?</a></td><td>match as few as possible</td></tr> <tr><td><a>ab|cd</a></td><td>match ab or cd</td></tr> </tbody></table> </div>'
document.querySelector("#quickrefParent").insertAdjacentHTML("afterend",html+`<style>${style}</style>`)
})
// Your code here...
})();