Code Explainers

Code explainers tagged #html-escaping

javascript 
const TOKEN_SPECS = [
  ["comment", /^\/\/[^\n]*|^\/\*[\s\S]*?\*\//],
  ["string", /^"(?:\\.|[^"\\])*"|^'(?:\\.|[^'\\])*'|^`(?:\\.|[^`\\])*`/],
  ["number", /^0[xX][\da-fA-F]+|^\d+(?:\.\d+)?(?:[eE][+-]?\d+)?/],

Building a syntax highlighter tokenizer

tokenizer regular-expressions lexing
Intermediate 8 steps
javascript 
function escapeHtml(str) {
  return str.replace(/[&<>"']/g, (ch) => ({
    '&': '&amp;',
    '<': '&lt;',

Safely highlighting search matches in text

html-escaping regex search-highlighting
Intermediate 7 steps