The simplest use of Regular Expressions is to find a plain text pattern. In this lesson we'll look at at finding plain text patterns as well as using the metacharacter "." and how to escape a metacharacter.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Javascript Regular Expressions: Find Plain Text Patterns</title> <style> pre { line-height: 2; } span { background-color: #eee; padding: 1px; outline: 1px solid #999; } </style> </head> <body> <pre></pre> </body> </html>
'use strict'; var str = `Cat sat on the hat.`; var regex = /.../g //any two charaters follow by a '.' /** * @param String str * @param RegExp regex * @param HTMLElement target */ const output = (str, regex, target) => { target.innerHTML = str.replace(regex, str => `<span>${str}</span>` ); } output(str, regex, document.querySelector('pre'));
